Mashiro Arisaka meets a ditzy student, Asuka Kurashina who he later discovers to be a transfer student to Kunahama Academy.

After Reiko leaves, Shion begs Asuka and the others to join the Kunahama's Flying Circus team. At school, Shion's younger sister Madoka congratulates Asuka on scoring against Reiko. Madoka then encourages all of them to join the team. Asuka agrees almost immediately, but Masaya refuses and Misaki says she needs to think about it.

The Summer Tournament has started, and Asuka is up against a girl named Arika Okoze from Shitou Suisan Academy. Misaki is up against Rika and Mashiro against Reiko. There, Asuka also spots the white-haired girl, Inui Saki from Kairyou Academy, who is playing against Shion. First up is Mashiro's match against Reiko.

Misaki has quit the FC team, much to the shock of the other members. Determined to work out an explanation from her, the girls try to talk to her, but Misaki is able to successfully escape their grasp each time.

Misaki and the others are worried about Asuka who hasn't gone to school that day. The next day, Misaki finds Asuka in the clock tower and asks her about her feelings after losing to Saki. After school, during FC training, Asuka finds herself unable to execute moves she normally would have performed with ease. One night Misaki finds a drenched Asuka standing outside her house with a blank look on her face.

The Fall Tournament has begun and Mashiro is up against Rika. After a close match, Mashiro wins 7-6 but loses in her second match. In the semifinals, Misaki is up against Saki. The match begins and Saki starts for the buoy while Misaki takes a shortcut. Using a Sonic Boost Misaki manages to engage Saki in a dogfight and hits Saki up into the air.

Asuka is facing off with Saki. Asuka uses three consecutive Sonic Boosts and a new technique called Pentagram Force to score the first two points. After scoring a point herself, Saki attacks Asuka but the latter evades all her attacks and scores her third point. Now 3-1, an angry Irina orders Saki to switch off her balancer, allowing her to tap into the full potential of her shoes.