Hinata buys lots of different clothes for Asumi and has her try them on in front of Nodoka and Chiyu. All three girls comment on how cute Asumi looks but Asumi asked what cute is, as it's another emotion she has yet to experience. Hinata attempts to explain it before she is called away to look after a new foster puppy at her family clinic. Hinata explains that the puppy is named Pochi-to who is very timid. In an attempt to get the puppy to open up, Hinata planned to take him to a dog park. Everyone accompanies her and Pochi-to to the park, where Hinata explains to Asumi of the difficulties of getting Pochi-to to trust her from the beginning. Asumi also witnesses how the other owners interact with their dogs and tries and fails to befriend Pochi-to. Suddenly, Guaiwaru appears and creates a MegaByogen from a Fruit Spirit and powers it up to gather more Mega Parts. The girls transform, however all but Cure Earth are overpowered by the MegaByogen. Pochi-to tries to defend Cure Sparkle, but luckily Cure Earth saves him before he is killed by the monster; she then purifies it. Afterwards Asumi reveals she has come to understand her new feelings after experiencing the dogs and their owners at the park, before finally making friends with Pochi-to.

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.