Kashou Minaduki runs a patisserie named "La Soleil" with his two cats, Chocola and Vanilla. Back home are four more cats and his younger sister Shigure. One day, Chocola, while on an errand, meets a stray kitten.

Coconut and Azuki clash as usual, but when Coconut breaks Azuki's favorite bowl, things get a little more tense than usual. Shigure organizes a sporting event for the cats, hoping that some friendly rivalry and exercise can help.