Akihisa and the gang continue to challenge the Year 3 students in the haunted house, although there are only a few people left who aren't disqualified. What is their plan to beat the Year 3 Toko-Natsu Duo? Who will be the winner of the courage contest?
Akihisa and the gang find out that their Avatars are different from usual. While they're making a racket, their upperclassmen come in and start an Avatar battle. However, the Principal stops them by telling them to use the scores in a Courage Contest.
Shoko and Yuuji take a trip down memory lane, recalling their days in elementary school. After Shoko transfers to Yuuji's school, she finds herself having a hard time making friends, and tries to befriend Yuuji. He acts indifferent at first, but then...
Since the last attempt to get Class D declare war on Class F failed, Yuuji comes up with a plan to have a negotiation meeting with Miharu. However, Yuuji, the only one who knows what to do, becomes unavailable, and so, Akihisa has to do it without Yuuji.
Akihisa realizes that Minami is acting strange because of the email he sent her by mistake during the training camp. When Miharu gets upset and tries to take it out on Class F by starting a Summoner Test War, they have to find a way out of it.
When Minami's family returned from Germany, she spoke little Japanese. Although she tried to fit in, her mistakes caused her classmates to stay away... except for Akihisa. Unfortunately, he screws up his attempts to be nice to her and upsets her instead.
The last day of the training camp is fast approaching, and Akihisa and Yuuji hatch one more plan to try and peek on the girls and find out who their blackmailer is. This sets the stage for an all-out showdown between the guys and the girls.
The search for the blackmailer continues, with Akihisa, Yuuji and the others narrowing in on a suspect: Aiko Kudou. In order to confirm their hunch, the gang once again sets out to sneak a peek during bath time.
After Akihisa seeks Kouta's advice on how to deal with a troubling blackmail note, he learns that Yuuji is in a similar situation. Kouta's investigation uncovers clues that suggest one person is causing all of the problems.
Complications arise after Mizuki and Shouko interrupt Akihisa's card game. Later, during a test of the Avatar system, the summoners of Class F are embarrassed to find their innermost thoughts revealed.
When Hideyoshi's tone-deaf twin is asked to sing the school song, he's roped into a costume change that's just asking for trouble. Then, Akihisa gets a new admirer - or two? - when he risks his neck to help Haduki cheer up her big sis.