Matataki gives the others a crash course in model rocket building. Some time later, Umika and her friends attend a model rocketry festival, and run into a familiar face...
With both summer vacation and the regional qualifiers for the Model Rocket Championship drawing ever closer, tensions run high between Matataki and the rest of the group.
The Model Rocket Championship regional qualifiers have finally begun. Umika is struck with fear right before her speech in front of a crowd. Can she manage to pull herself together in time?
Umika and the others begin to prepare for the upcoming model rocketry tournament. But they find out that in order to participate, all of them will need model rocket licenses!
Matataki convinces Umika and the others to start a school-sanctioned club to finance their rocketry endeavors. The next day, everyone in Umika's grade sets off on an overnight study camp.
With summer vacation over, Umika must put on a brave face in front of the others after their loss. She soon learns that Matataki refuses to talk to anyone or come to school.
Umika is excited to start building a rocket with Yu. However, she is then confronted by her classmate, Haruno, who just happened to spot Umika and Yu sneaking into a lighthouse after school...
Haruno shows up with a surprise for Umika and Yu. The three of them prepare to face off against Matataki in a bottle rocket duel. The fate of Umika's rocketry dreams hangs in the balance!
With Matataki still absent from school and shutting everyone out, Umika must find a way to get through to her. But first, they decide to enlist help from a familiar face...