A young schoolgirl, Haru, is pitched into a fantastical world after crossing paths with a nonchalant cat, which she happens to scoop up from the path of an oncoming truck. Haru is flabbergasted when the unfazed feline, whom is an eligible young prince from an alternate world of the Kingdom of the Cats, subsequently gets up, dusts himself down and begins thanking her for saving his life. The local cat community is similarly appreciative of her gesture, leading her into an other-worldly adventure.