As a reward for all their hard work promoting the Idol Time system, Meganee takes Laala, Yui, Nino, and Miichiru to PriPari for a vacation. They meet Falulu and Fuwari, but when they try to get PriPari Meganii to install the Idol Time system, he reveals that Hibiki has taken over the system in PriPari. Hibiki refuses to have the system installed unless they win a swimming race...