Twilight is an agent that works for WISE, Westalis's intelligence agency, and he is tasked with investigating Desmond, who is in Ostania and planning to start a war. Twilight disguises himself as the psychiatrist Loid Forger and adopts a girl named Anya so that he can enroll her into the prestigious Eden College to get closer to his target. Unbeknownst to him, Anya is actually a telepath who can read people's minds. One day, members of a mafia group that is after Twilight kidnaps Anya. Loid realizes that he needs to reconsider his priorities and...

Civil servant Yor Briar has a secret identity: an assassin named the Thorn Princess. Lately, single women had been suspected of being spies, which was making Yor nervous. Meanwhile, Loid was searching for someone to play Anya's mother so they could attend the interview at Eden College. He just happens to run into Yor at a boutique. Anya reads Yor's mind and finds out that she's an assassin and tries to get Loid to ask Yor to play her mother.

Yor moves in with Loid and Anya. Now that they are a family, they need to prepare for the interview. But Loid realizes with how Anya and Yor currently are, the interview probably won't go well. In order to make sure they all understand how an upper-class family should be, Loid decides that they should all go out as a family. They go to the theatre and a museum, but it's just not clicking with Anya and Yor. Twilight begins to lose hope, but...

The day they had been preparing for has finally arrived! The Forgers are fully prepared and head to the interview. As soon as they enter the school grounds, Loid feels someone watching them. All of the applicants were being observed from the shadows by the instructors of the academy. The exam had already begun. Housemaster Henderson, who would be grading their performance, kept a keen eye on how the Forgers were acting and seeing if they were truly worthy of the prestigious Eden College.

The day that Eden College would announce the applicants that successfully got into the school had finally arrived, but Anya's number is not listed. The Forgers fall into the depths of despair but are greeted by Henderson. He praises them for their interview and tells them that Anya is at the top of the waiting list. Three days later, they find out that Anya got into the school! Franky comes over to celebrate with the Forgers and they all agree to reward Anya for working so hard. What Anya asks for...

Anya's uniform is finished. Loid has to go to a WISE strategy meeting, so he has Yor pick up the uniform as he heads to the safehouse. At the meeting, he finds out that Anya will have to receive 8 Stellar Stars and become an Imperial Scholar at Eden College in order for him to successfully complete Operation Strix. Meanwhile, Anya is very excited about getting her new uniform. But there are always criminals on the lookout for wealthy students from Eden College and Anya gets targeted by a group of hoodlums.

Anya ends up with a Tonitrus Bolt after she hit Damian Desmond. Sadly, this causes her to stand out for the wrong reasons in class which depresses her, but she ends up friends with Becky, and school becomes a little more fun. She also tries to apologize to Damian for hitting him, but just can't seem to get the words out. For the sake of Operation Strix, Loid disguises himself as someone who works at the school and tries to help Anya reconcile from the shadows, but...

Ostania's counterintelligence agency and national security bureau conducts spy hunts and keeps surveillance on its citizens to maintain peace within the country. They are also called the Secret Police and are feared. Yor's younger brother Yuri actually belongs to the Secret Police and is hunting down spies while keeping this a secret from Yor and others around him. One day, he suddenly shows up at the Forger residence. The Forgers, who are full of secrets, and Yuri, who has a secret identity, come face to face!

In order to prove to Yuri that they are actually a married couple, Loid and Yor are supposed to kiss. Loid is willing to get this done immediately for the sake of Operation Strix, but Yor can't do this sober, so she ends up downing a bunch of wine and gets drunk. Yuri sees his sister this way, also gets drunk, and is unable to make rational decisions anymore...

A rumor spreads amongst the first graders at Eden College saying that if they do well in their next PE class, they will get rewarded with Stella Stars. Anya is determined to get a Stella Star, so she trains with Yor. Thus begins the dodgeball match between Cecile Hall and Wald Hall! Anya and her classmates are determined to win, but they are faced with the giant, Bill Watkins.

Yor is shot in the butt while on a mission and looks miserable when she gets home. Loid mistakes her very apparent miserable mood as her being unhappy with their marriage of convenience and offers to take her out on a date.

Bond sees an ominous future and believes that it's Yor's food that's going to cause it. In order to change this fate, Bond leaves the house to search for Loid! Henderson orders Damian, Emil, and Ewen to go on a field research trip with Mr. Green.

Yuri is doing great at his job with the Secret Police. His assignment today is to investigate a former newspaper reporter suspected of selling articles slandering Ostania to Westalis. Anya's favorite cartoon hero Bondman shows off his elegant spy moves!!

Eden's legendary dessert finally appears! In order to obtain the macaroons that supposedly can make you into an Imperial Scholar if eaten, Anya and her friends race to get to them first.

On a mission as Thorn Princess and using her job as city hall as a cover, Yor is tasked with protecting the only survivors of the Gretcher family, Olka and her son, and helping them escape to a different country by traveling on a cruise ship.

After boarding the cruise ship, Yor began her duty as bodyguard to Olka and her son. Meanwhile, Yor's superior, Matthew, finds an assassin who is after Olka and her son.

Loid tries to pick out souvenirs that will make him look like a fun and happy dad so he can cheer Anya up. Meanwhile, Yor was facing off with Sickle-and-Chain Barnaby.

The deck is filled with passengers enjoying the fireworks show. Anya and Loid were also enjoying the fireworks. Meanwhile, Yor's mission finally reaches its climax. She tries to help Olka and the others escape, but they are surrounded by assassins!

Due to the movements the State Security Service members were making, Loid finds out that there was a bomb on the ship. Loid leaves Anya at the daycare in a hurry then disguises himself as a State Security Service member to take care of the bomb.

The morning after the attack from the assassins and the bomb scare, the cruise ship arrives at the resort island. Loid and Anya meet up with Yor and the three enjoy a family vacation!

The Forgers enjoy a day off while Nightfall hires Franky to help her on a mission.

Anya's class must avoid getting Tonitrus Bolts and we get a glimpse into someone's past.

Loid recalls what happened in the past that led him to where he is today.