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.
--Huh?
--Tuna!
-¿Eh?
-¡Atún!
- Huh?
- Atum!