Choo Sunghoon and Sarang are going to Osaka to meet Sunghoon's parents. Tablo is recovering from shoulder surgery, will he be able to look after his daughter Haru? Lee Hwi-jae has become the god of child care, now that he's familiar with taking care of his twins, Seoeon and Seojun. He goes to see an eye doctor to check the twin's eyes. The charismatic actor Jang Hyunsung is actually a very clumsy person at home. He's very friendly with his two sons, Junu and Junseo. He teaches Junseo how to ride a bicycle without training wheels.

Sunghoon and Sarang have so much fun in Osaka, Sarang spends her birthday at her grandparents house and experiences various things she had never done before. Meanwhile, Tablo and Haru goes to the aquarium to see fishes which is Haru favorite thing in the world. Hwijae, worried about the twin's eyes, takes them to an eye doctor. They get their eyes checked up and Hwijae gets so scared by the sound of their crying. Also he takes them to a baseball park with him. Hyunsung goes to Junu's parent-teacher conference and gets surprised by Junu's letter and his performance in school.

Sunghoon and his dad wants to teach Sarang judo. Sarang is now getting along well with her grandparents and Sarang's mom, Shiho Yano arrives in Osaka. Haru wants to treat her dad's arm. Tablo starves for two days and realizes how hard it was for his wife Hyejung to look after Haru. It's Haru's first time spending two days without her mom. Hwijae's wife told Hwijae to go to culture center. Will he be able to take care of the twins? Hyunsung tries to cook curry but he doesn't even know how to peel carrots, also Hyunsung and his boys prepare a surprise for their mom for their wedding anniversary.

Sarang's suffering from constipation. To show off his cool side, Sunghoon takes Sarang to his photo shoot. Also he takes her to the gym. Sarang usually cries but she stays quiet and Sunghoon gets surprised by that. Tablo and his family has breakfast, after Hyejeong leaves, Haru dances to K-Pop. Tablo plays many of his songs to Haru to get her opinion. Hwijae's twins are growing really fast. They can now stand up. After the boys advancement test in taekwondo, Hyunsung goes to the market where he gets lots of attention, to cook something tasty for the boys.

Haru learns to spend more time with Tablo band mate and friend, Tukutz's baby. Junu and Junseo go shopping for clothes with Hyunsung. Hwijae takes the twins to a wedding and they continually suffer from stomach problems. Sunghoon takes Sarang to Hakone hot springs, but it's not the trip he had expected since Sarang refuses to go into the hot spring and won't let him either. Guest stars: DJ Tukutz with his son Kim Yunu, Lee Young-Hyun, Jeong Hyeong-don via phone call, Jeong Jun-ha via phone call

Haru goes to a fishing park with Tablo, they catch their first fish ever. Sarang continues to have constipation problems. Sunghoon and Sarang are still at Hakone, they have a craft day where they make an souvenir for mom Shiho. The twins have diarrhea problems and special nannies Choi Hongman and Lee Hyundo come to help. Hwijae takes Seoeon and Seojun to a baby play facility where Seoeon encounters his first love. Junu and Junseo learn about pocket money and finances. Guest stars: Lee Hyun-do, Choi Hong-man

Sarang's mother, Shiho Yano gives a ton of chores to Sunghoon, he has to take Sarang to get her hair cut, make juice for her constipation and so on. to avoid Sarang from getting mad at him he takes her to the Disney store and lets her pick out whatever she wants. Haru visits the zoo with Tablo, unlike her friends she isn't scared to touch the animals at all. Hwijae tries to feed his twins baby food but the twins start fighting, later he takes the twins to the TV studio. Junu and Junseo start the day by fighting and Hyunsung takes them out to fly a kite. Hyunsung also brings his sons to his mother's house to make kimchi. The four dads gather together to tape an episode of KBS Happy Together Guest stars: Yu Jae-suk, Park Myung-su

The four dads continue with their taping of Happy Together. Shiho gives Sunghoon a list of things he needs to do and one of them is to buy a Christmas tree. It's his first time decorating a tree. Kwanghee of ZE:A visits the Choovely family. Tablo wants to make this Christmas special so he disguises himself as Santa Claus but Haru's reaction isn't something Tablo expected. The twins get to celebrate their first Christmas. Hwijae takes them to a toy store but they keep giving him a hard time. Hyunsung makes egg bread for the first time for Junu and Junseo. Guest stars: Yu Jae-suk, Park Myung-su, Shin Bong-sun, Park Mi-sun, Hwang Kwanghee, Jeong Eun-pyo and his family Guest stars: Yu Jae-suk, Park Myung-su, Shin Bong-sun, Park Mi-sun, Hwang Kwanghee, Jeong Eun-pyo and his family

Sunghoon and Sarang visit Mt. Fuji, but Sarang isn't interested at all. Later Sunghoon prepares a surprise party for Shiho. Tablo and Haru visit Haru's grandpa's grave. She writes a card to him. On the morning of Hyejung's return, Haru surprises her dad with the song she wrote. The twins are growing really fast, they even try walking with the walker. Hwijae takes them to a swimming pool for babies to swim. Hyunsung tries making bean sprout rice but Junseo seems to know how he should make it. Junu expresses how he feels, he thinks his mom favors Junseo since he's younger. Guest stars: Jeong Jun-ha via phone call

Sunghoon and Sarang decide to go to Okinawa to get away from snowy Tokyo. Tablo wants to help Haru find what she wants to do in the future, so they visit a martial arts school. Hwijae wants his twins to be professional athletes so he starts teaching them sports, he takes them to a basketball court and calls a professional baseball player to his house. On a snowing day, Hyunsung takes his two son's to their grandpa's grave. Hyunsung cries in grief as he misses his father so much. Junseo waits for the tooth fairy and makes a wish. Guest stars: Hwang Jae-kyun (Lotte Giants infielder)

The Choovely family begin their trip in Okinawa as they go to see dolphins, horses and the 2nd largest aquarium in the world. Haru continues her search for a career path with ballet. Junu and Junseo get a treat to a theme park from their dad and they learn to overcome some fears. The twins get their first ever haircut and professional photo shoot. They arrive all dressed up at Grandma's house to celebrate her birthday. Guest stars: Cha Tae-hyun via phone call, Hwang Jung-min via phone call

The Choovely family spend their last day in Okinawa. Junseo and Junu get caught up in their father's enthusiasm for cooking. Hyunsung attempts his very first pasta dish. Hwijae ends up having a great but also terrible time at his parent's house when he and the twins pay a visit to celebrate his mother's birthday. He's worried to death about what his wife will think about what his mother has done. Seojun gets complements from his grandparents for his happy and open personality, while Seoeon is criticized for being a brat and crybaby. Haru continues her search for an early look at a career path which leads her to cooking class. Guest stars: Director Jang Hang-Jun with his daughter Jang Yun-seo

Sarang visits Junu and Junseo, and Haru visits Seojun and Seoeon. Hwijae and his wife Jeongwon tries to play a candid camera trick on Tablo, but their prank backfires and Jeongwon ends up suffering. The Jang brothers vies for Sarang's attention because of her cuteness. Sarang's seems to prefer the older and more mature Junu as a playmate. Haru is excited about spending a night at the twins home and can't wait to play with them, but she ends up making Hwijae and her dad suffer through the entire night. It's the Seollal special where all the families gather for the first time.

The Superman families have gathered for the first time. The dads cook a new year meal together and give out money to the children. Junu captured Sarang's attention in the last episode, this time Haru shows her undeniable crush on him, but Junu only has eyes for laid back baby Seojun once he arrives at uncle Hwijae's home. All the kids and dads have a photo shoot together and the moms arrives to give their thoughts about the show.

Hyunsung and the boys visit Haru's house for a full day of fun, fishing and hanging out. Haru's love for Junu continues to blossom as she's blown away by his gentle kindness and charm. Tablo, Haru and the Jang's goes ice fishing. Meanwhile the Choovely family enjoy their first whole day in Seoul. Sarang's need for an Anpanman toy causes Sunghoon to lose a fortune. They head to a dry sauna and then to Insa-dong for a great day and have a dinner date with an international star. Hwijae and the twins are not shown in this episode. Guest stars: Rain

The Jang family visits Japan for the first time and get lost on the way to the Choo's home. When they finally get there, Junseo continues to try and win over Sarang but to no avail. Hyunsung also finds out he is quite popular in Japan when he encounters a Japanese fan. Hwijae takes his boys out for the first time in a while and learns how to massage them to keep them calm. Haru attends Big Bang's concert where she gets shy when she sees her idol and later helps out dad, Tablo in the recording studio. Guest stars: Big Bang, Sandara Park from 2NE1, Lee Hi, Mithra Jin & DJ Tukutz from Epik High

The Jang brothers continue their journey in Japan as Junseo gets a haircut from Sunghoon regular stylist, they visit a giant Gundam and have a face-off with a real-life raptor. Meanwhile Haru has fun with her friend Hyeon as they go winter camping. The twins are out with their grandma who always gets criticized for her child-rearing antics. Hwijae goes out with Seoeon and gets embarrassed when fans mentioned that Seoeon can't be without his dad.

The Jang's continue their adventures in Japan with the Choovely family. They visit Legoland and Junseo finally seems to get close with Sarang. Haru spends a fun day on dates with daddy and even shoots and stars in her own children's book. The twins get their development tested. The results surprise Hwijae and he learns to change certain actions towards his sons.

Haru spends the spring day picking strawberries and making jam for her mom. She becomes close with a puppy at the animal farm next door and wants to take him home. The twins split up for the day and Hwijae fulfills his dream of acting like a Hollywood dad. He comes home to give Seojun a bubble bath with the help from two Super Junior members. Sarang gets to hang out with her pre-school boyfriend Yuto. Sunghoon gets a taste of how it is to take care of a boy and care for two kids at the same time. Jang's have a fun time getting Junseo vaccinated and meeting some big name actors. Guest stars: Kim Heechul & Kangin from Super Junior, Jeong Eun-pyo and his family, cast of Hwayi: A Monster Boy (Kim Yoon-seok, Cho Jin-woong)

Taewoong's 48 hours of child care duty begins. He takes Jion to the local park where he has trouble changing her diaper. Later when he is feeding dinner to Jion he is touched and surprised that she is able to mimic his actions while he was cooking. Sarang plays dress up with her mom. Her friend Yuto comes over to help take her of the newborn puppies and participate in Sarang's Korean lessons. Hwijae shows the twins how to dry laundry. Later he takes them out for a restaurant to have a Korean feast. Major League Baseball player Hyun-jin Ryu visit the Song home.

Taewoong potty trains Jion, later the two go grocery shopping and he child proofs the home while Jion is taking a nap. Sarang visits her older cousin Yume in Kyoto, Japan. While there she also meets up with her other maternal relatives (her great-great grandmother, grandmother, and uncle). The two have fun wearing hanboks, also her cousin Yume gets to see Sarang's huge eating appetite. Hwijae brings the twins to a bakery where they let you decorate your own cake. Hwijae wants to decorate a cake for his friend Yoon Hyung Bin's son 100th day but the twins won't stop eating the icing cream on the cake. The Song's are still enjoying their time with Hyun-jin Ryu. Later Ilgook takes the triplets skiing.

Taewoong takes Jion out for noodles, where she shows her unique way of eating. Later the novice dad gives her a bath but make her cry when he can't avoid getting shampoo in her eyes. Sarang continues her visit at her maternal relatives home in Kyoto. Her Great-grandmother and Grandmother learn a few Korean words to communicate with her. Later Shiho arrives and the entire family visit her elementary school. Ilgook brings the triplets to a village where the boys are transformed into ancient Joseon scholars. Minguk can't stop crying after he gets scolded by the teacher for painting the floor with black ink. Hwijae takes the twins to a cat cafe with get them familiar with cats. Seojun shows his mischievous side when he won't stop knocking down blocks that Seoeon is playing with.

Jion shows off her dance talents at a ballet class. Later she goes to the doctor's office and shows her braveness when she hardly cries. Hwijae and the twins goes to the Noryangjin fish market to explore. Seojun shows his curiosity and fearlessness when he asks his dad about the all species and touches all of them without fear. He also shows his pickiness for food when he refuses to eat any of the delicious cooked seafood dad has brought, instead sternly demands to only eat a corn dish. Sarang and Sunghoon are in Korea, first they have a meal with well known actor Cha Seung-won and later visit the Song residence. Sarang has fun with the triplets and Manse shows his adoration for her.

Donggook has a quality time with the three children by going to a restaurant in his memory as well as making a promotional video for Pyeongchang Olympics. Meanwhile, Sam stays in a maternity ward with his wife, Yumi, and William for the delivery of his second child. You get to see the special story of them including the tough yet beautiful process of childbirth and welcoming the new member of their family with moving tears.

Donggook prepares a special fourth birthday for Sian who is transformed into a superhero. Sam and William visit the famous fastidious star, Jiwoong's house and finds a new generous side of him as an uncle. Meanwhile, Jiyong is surprised by how brave and confident Seungjae is in front of a crowd as well as in the nature.

Donggook has a special and awkward day with his father and Sian while wearing matching outfits. Sam takes a business trip to Japan and meets Sayuri to ask for babysitting as well as interviewing his idol. Meanwhile, as a farewell, Taeyoung's family opens Ki Cafe to repay the love they have received so far.

Donggook and the five siblings become runway models of a charity fashion show and experience the chaos of a backstage. Sam uses his wits to help William who gets exhausted while enjoying the food tour in Japan. Meanwhile, Jiyong finds enlightenment of raising a child through Seungjae's creativity test.

Hwijae and the twin become the cameos in Jinyoung's music video and the twin fall in love with tteokbokki and Jinyoung. Sam visits the neighbor, Jury, and practices being a father of two boys. Meanwhile, Jiyong disguises himself as a grandmother to find out Seungjae's honest feelings about him.

To celebrate the new year, Hwijae and the twins meet with the people close to Hwijae and exchange heartwarming greetings. Jiyong visits Yeonnam-dong with Seungjae and has an eventful day. Donggook, his parents, and his children visit the graveyard of Donggook's grandmother and savor the love of their family. Sam takes care of the two sons by himself for the first time and realizes the hardships and the joy of raising the children.

Donggook and the three kids collect the items they do not use and head to the junkyard. After they are back at home and Donggook goes out, the kids cause an unexpected trouble. Sam hears a shocking news about William's teeth growth when William and Bentley get different checkups at the clinic. Meanwhile, for Seungjae, who likes dinosaurs, Jiyong takes him to a special group meeting.

For Jiyong, who is busy at work, Donggook invites Seungjae over for a play date with Sian. Sam and Sam Okyere organize a 100-day photo shoot of Bentley. Meanwhile, Hyunbin spends the day with his cousin, Yoonji, and her lovely daughter Lani and reminisces the memories of the past.

Donggook's children are separated from their dad and spend the vacation in Bangkok while learning in an international school. Sian tries to adjust in his own way, to the new environment where he can't communicate with his own language. Sam gathers with three of his friends who also have kids and spend a good time. Meanwhile, Hwijae and the twins get down to cleaning the house for the spring.

Jiyong and Seungjae take a trip by train to Samcheok just the two of them. William's family gets ready to take off to Australia to meet Grandma. And Sam and Wiliam visit Dongdaemun Market and have a good time while picking up gifts for their family. Meanwhile, Donggook's children take fright at the unexpected "guest".

The families get ready for the KBS Entertainment Awards ceremony and the dads prepare a surprise to farewell Bong Tae-gyu and Si-ha.

Ji-yong tries to slow down his rushed life but Seung-jae and him meet the hulk instead. An idol uncle goes all the way to Ulsan to take care of the Park kids and take them to a dentist. Sam teaches the kids how to fish.

The Lee family does winter sports training with the Ko duo. Sam tries to get William to cherish his old toys, then they visit a greenhouse. The Park family visit Busan.

Ki Yom, the puppy, finds a new home and has to leave the Lee family. Plus, they go to Thailand to visit the older sisters. William is obsessed with chocolates and watching tv. The Park family continues their trip in Busan, and Na-sun has a traumatic experience.

The Lee family meets elephants and watch a dinner show in Thailand. Na-eun attends a Korean traditional school to learn Korean etiquette. The Hammingtons visit a public bath.

The Ko duo meets up with the Shim family. Geon-hoo talks to Na-eun and discuss their differences. William meets superheroes including spider-man, his favorite.

The Lee family runs into a bit of trouble in Thailand. Jo-hoo suddenly becomes a father of three daughters. A famous grandfather meets with the Hammingtons.

Jo Sung-mo is back and holds a concert and Bong-yeon joins him. William learns to fly. Na-eun learns to bake with the help of a famous chef.

The Lee siblings, Seung-jae, and Na-eun get invited to wizarding school to learn magic. The Hammingtons have comedian guests come over. Bong-yeon visits his sick grandfather in a very emotional and touching reunion.

William gets his own phone. Geun-ho moves into his own house, and the Park family visits Busan. Jang Beom-june's family join the cast.

It's already another year, and Ra-im is walking and talking now. Joo-ho shows the kids around his alma mater. The Hammingtons move over to the UAE capital, Abu Dhabi. The Do siblings get a tour of their dad's workplace.

It's the KBS end of the year awards, and the kids get together to claim their wins and meet famous aunts and uncles. Plus, Will and Ben meet Pengsoo. Guest star(s): Pengsoo, Jang Dong-yoon, Jung Il-woo

Jam Jam feels bittersweet during her first day of daycare. The Park siblings wake up in Seoul then attend their dad's soccer game. Will and Ben's snow day with Pengsoo resumes. Yeon-woo runs his first errand on his own without the help of the cameramen uncles.

Jam Jam goes to a ski resort. The Park family reminisce about their time on the show as they plan for a hiatus. The Do family overcomes everything that goes wrong as they attend a wedding. Will and Ben attend a friends birthday party.

Ra-won runs her own salon. Yeon-woo lends a voice to his dad. We meet a new superman who has a musically talented son with a large vocabulary.

Jam Jam's curiosity peaks while her dad revives his generation as the family takes a trip to Singapore. Will and Ben go to the dentist. Yeon-woo has a date at a sauna.

Jam Jam's Singapore tour continues. Music lover Ha-oh shops for a new instrument. Will and Ben play dress up to visit a friend and her strange and unfunny superman dad. The Do family take a meaningful trip to Busan.

The Kang duo face a crisis while cooking, and Ha-oh visits a clinic. We meet a new son whose mom is eager to get a day off. Bentley has a sad parting with his pacifier, but Will helps him through it. The Do family's trip in Busan resumes.

Jam Jam goes for a thrilling ride on her last day in Singapore. Kyung-min shows his daughters why he was an idol with his friend. Will and Ben make a gift for their grandmother, and Sam teaches them a lesson. The Do kids watch their mom at work. Guest star(s): Kim Won-jun and Ye-eun

We get a peek into a new superman's bilingual house as Jam Jam visits them. Gary puts genius Ha-oh to the test. William wishes for spring, so Sam makes his wish come true. Yeon-woo learns the concept of working hard for money, and he doesn't disappoint. Guest star(s): Kim In-seok [ko], Angela Park [ko], Tae-yang and Tae-san

Families shown in the episode: Kim Jun-ho (Kim Eun-woo); Jasson (Yeon Jun-beom); Park Joo-ho (Park Na-eun, Park Gun-hoo, & Park Jin-woo); Kang Kyung-joon (Kang Jung-an, Kang Jung-woo); Lee Pil-mo (Lee Dam-ho, Lee Do-ho); Jung Sung-ho (Jung Soo-ah, Jung Soo-ae, Jung Soo-hyun, Jung Jae-bum, Jung Ha-neul)// Guest star(s): Choo Sung-hoon, Lee Jae-ah, Lee Jae-si, Lee Si-an, Kim Ho-young, Lee Eun-ji// Special appearance(s): Cha Jun-hwan (via short video); Lee Seung-woo (via short video); TVXQ Changmin (via short video); Hwang Kwang-hee (via short video); Enhypen Sunghoon (via short video); The Boyz Juyeon & Younghoon (via short video); Hwang Je-seong (via short video); Kim Jae-joon (via short video)

Families shown in the episode: Jasson (Yeon Jun-beom); Lee Pil-mo (Lee Dam-ho, Lee Do-ho)// Guest star(s): Park Seul-gi, Gong Moon-sung, Bae Yoon-jung, Hyerim, Shin Min-chul, The One, Lee Jung

Families shown in the episode: Kim Jun-ho (Kim Eun-woo & Kim Jung-woo); Honey J (Jung Love)// Guest star(s): —

Families shown in the episode: Kim Jun-ho (Kim Eun-woo & Kim Jung-woo); Park Joo-ho (Park Gun-hoo & Park Jin-woo)// Guest star(s): Fly to the Sky Brian Joo

Families shown in the episode: Jasson (Yeon Jun-beom); Honey J (Jung Love)// Guest star(s): Aiki, Noze, Leejung, Gabee

Families shown in the episode: Kim Jun-ho (Kim Eun-woo & Kim Jung-woo); Honey J (Jung Love)// Guest star(s): —

Families shown in the episode: Jasson (Yeon Jun-beom); Jung Sung-ho (Jung Soo-ah, Jung Soo-ae, Jung Soo-hyun, Jung Jae-bum, Jung Ha-neul)// Guest star(s): Sleepy, Ayumi

Families shown in the episode: Kim Jun-ho (Kim Eun-woo & Kim Jung-woo); Honey J (Jung Love)// Guest star(s): Jin Sung

Families shown in the episode: Jasson (Yeon Jun-beom); Jo Hyeon-woo (Jo Ha-rin & Jo Yerin)// Guest star(s): Park Seul-gi, Bae Yoon-jung

Families shown in the episode: Kim Jun-ho (Kim Eun-woo & Kim Jung-woo); Moon Hee-joon (Moon Hee-yul & Moon Hee-woo)// Guest star(s): Kim Ho-young