Pegitan becomes scared after watching a TV drama, causing Chiyu to reasure him that there's nothing to worry about before telling him how cute he is. However, Pegitan feels insulted by the comment, as he wants to act brave for Chiyu, and runs away. While thinking about what to do, Pegitan is happened upon by a young girl named Riri, who takes Pegitan home. Pegitan tries to escape back to Chiyu but learns that Riri struggles with being alone, as she has just transferred schools and her mother works late. Pegitan tries to help out by following Riri to school, only to get caught by one of the other students. However, this gives Riri the courage to save Pegitan and some of the other students help her, becoming her friends. After school, Riri thanks Pegitan for his help, during which, Chiyu and the others turn up. Riri, not wanting to lose Pegitan, runs home with him before Chiyu can catch up with her. Unfortunately, Shindoine creates a MegaByogen from a Gem spirit, so Chiyu leaves Nodoka, Hinata and Asumi to engage the monster while she tries to get Pegitan back. Riri locks Pegitan in her room, but he escapes after telling her she doesn't need him and that she is already brave. Pegitan returns to Chiyu and she transforms into Cure Fontaine before joining the other Cures and purifying the MegaByogen. Afterwards, Chiyu takes Pegitan back to Riri's house so that he can continue to visit her.

Nodoka's father takes her and Asumi to a Hot-Air Balloon race to watch the team from his former college compete. Asumi learns about the feeling of passion and both her and Rate decide to cheer for the team too. However, when the team loses the first race, Asumi learns about the feeling of frustration but vows to help them win the next race by predicting the wind direction. Everything goes well until the team are just about to finish, during which, Guaiwaru appears and creates a MegaByogen, powering it up with multiple Mega Parts. The MegaByogen proves too strong for the Cures but is shown to be vulnerable to the wind direction. Cure Earth uses this to trap the monster in a vortex before purifying it. Afterwards, the freed Air Spirit gives Asumi a new elemental bottle. Later while everyone enjoys pancakes supplied by Hinata, Nodoka hears a sound in the nearby forest and goes to investigate. She finds Daruizen about to use a Mega Part on a crow and transforms into Cure Grace to confront him. However, Daruizen gets an idea and uses the Mega Part on Cure Grace, knocking her unconscious.