Due to the cafe not having many customers during summer, Ruby comes up with an idea to open a shop in the beach for them to make more profit. Later on, they opened a cafe named "Jewelpet Seaside Cafe" on the beach and goes to work, with each of them cooking, and serving food for customers. They also watch over a volleyball competition between Kosuke, Mori, Takumi and Taira, as he tells Chiari she has the potential to be his girlfriend.