It is summer vacation. Melodytchi is returning to Melody Land for a homecoming, accompanied by Lovelitchi and her family. Pianitchi joins as well, so that she can see Papapianitchi. The three girls are meant to perform a new song for Joou Sama. When they go to Musica Forest to compose, they meet Fūkotchi, who is searching for the "Rainbow Clover".