On the very first day of junior high, Eren oversleeps and is woken up by Mikasa. While rushing to school, he runs into several of his classmates. When they arrive at school, everyone except Eren notices something is odd.

Eren and Mikasa are sent to collect a club admission form from Armin, who has secluded himself at home all winter for fear of the cold. On the way, a Titan attempts to steal their gifts of food, but it is defeated by Levi, who then steals Armins's futon. In an attempt to recover the futon, Eren and his classmates track down the Attack Junior High Scout Regiment, a secret, unapproved club. There they meet Eld, Olou, Petra, and Günther. Levi arrives with Armin's futon, which he had stolen in order to mend a tear it had developed, and accepts all of them into the club.

Annie is unable to admit her love of cheeseburgers at lunchtime due to the derision Eren received after admitting to the same thing; due to this, she develops a grudge and vows to defeat him in the next day's dodgeball match. However, when the match rolls around, Eren is late, causing Mikasa to be unable to devote herself to the game. After multiple rounds, only two teams are left: one with Jean, Mikasa, Armin, Sasha, and Connie; the other with Annie, Reiner, Bertold, Ymir, and Krista. At the last moment, however, Eren arrives, allowing Mikasa to give the game her all, battling to a tie with Annie while everyone else is eliminated. Annie finally admits the reason for her grudge to Eren and they make up, just as Connie finally figures out the rules and gets Annie out. Afterward, Eren, Mikasa, Annie, and Armin have lunch together, and Mikasa becomes jealous when Eren and Annie start to bond over their mutual love of cheeseburgers.

Eren and the gang reluctantly go to their first club activities at the Wall Cleanup Club. The president of the club tells them that the survival of the club depends on them and orders them to clean all the windows in school as their first activity.

The results of the mid-term exam are in and Mr. Keith tells his students that those who failed the tests will have to take makeup tests the following week. Those who fail again will have to take refresher classes.

Jean finds a love letter in his locker and begins to fantasize about who it might be from. Annie approaches him in class, and a similar letter falls from her pocket, but she runs away before he can ask her about it. Later, they find her putting the letter in his locker: when Jean opens it, he finds a message asking him to meet at the park, and runs off. Annie then arrives at the park, and reveals that the letter was not from her, but from a Titan who fell in love with Jean after he gave it food as a distraction while he and Marco fled. Much to his classmates horror, Jean refuses to accept reality, instead convincing himself that the Titan is a normal girl. He soon comes to his senses, however, and rejects her; she smashes him into the ground and runs away, vowing not to give up. Sasha tries to console him by pretending that two pieces of food are girls who want to date him, and he retreats into fantasy. The others go home, leaving Marco to wait for Jean to come to his senses.

When Eren and his friends displease the upperclassmen, they are stuck with cleaning duty. Levi decides to teach them a lesson, challenging them to a contest in the Sports Day games in which the losing grade must clean the Titan's building. The next day, Sasha begins by losing the bread eating race to Hange when the latter uses her captive Titan, Sawney, to win. Jean also loses his game despite using the Omni-directional gear to cheat. The class begins to despair their chances of winning when Mikasa proposes a way to get ahead: defeat the upperclassmen in the shoulder wars match. They almost win, but are defeated by Levi. Hange then floods the entire field with confetti. As Eren and his classmates grumble about having to clean the field, they are joined by Rico and the other upperclassmen, who agree to help them.

Following the events of the previous episode, the Hange and the other upperclassmen challenge Eren's class to a test of courage. That night they arrive at school, where Hange and Levi explain the rules: they must visit the art, music, and science rooms and write their names on the blackboard. The class splits into two groups and heads out, encountering various ghostly apparitions said to be the "Seven Wonders of Attack Junior High"; there is a rumor that anyone who sees all seven will be cursed with misfortune. Finally reaching the gym, they find that the ghosts were in fact a prank orchestrated by the upperclassmen. Erwin Smith, the club's adviser, reveals that one spirit, the woman with black hair who Christa encountered, was in fact a real ghost.

Bertholdt asks out Annie to the summer festival with Reiner, Christa and Ymir. She was not interested but she was forced to join in after her classmates all decided to go.On the rooftop, Reiner tells Bertholdt to tell Annie how he really feels about her. On the day of the summer festival, Reiner puts together three operations in plan to get Annie to fall in love with Bertholdt but fails. On the third operation, shaved ice was almost spilled on Annie but Bertholdt rushes towards her in time to only get himself soaked instead. After he washed himself, he heads towards a die-cutting stall out of interest while the group tries desperately to find him. Only Annie seemed to know where he was and the owner of the die-cutting stall gives Bertholdt two masks as he thought that Bertholdt and Annie were dating. Bertholdt blushes hard and tells him that that was not the case. The two sit on a bench at the area where the entire group was supposed to meet. She does not know what to say to describe Bertholdt when he is with her and she ends up laughing after what Bertholdt commented. Sasha was about to call out to them but Reiner and Ymir hold her back. In the end, Bertholdt confesses his feelings towards Annie and replies with a 'yes'. Just then, the group hiding and eavesdropping fall out of the bushes and Reiner and Ymir congratulates Bertholdt and Annie. Bertholdt suggest they go back for die-cutting which leave Reiner and Ymir in confusion. While they are die-cutting, fireworks appear in the sky and everyone is in awe.

The post of student council president is highly coveted. The choice of the post is therefore hotly contested

School festival: food stalls, theatre, maid café, cat café - everyone gives their all with great enthusiasm and ambition.

Enough Eren! He can't stand the ducking anymore. Against the school rules and the urgent warnings of the teachers, he wants to get the cheeseburgers back from the titans.