A couple who are about to divorce argue over who should take custody over their pet cat. The cat flees and disappears due to the human commotions, causing connections and revelations to be revealed.

The ever versatile Kazuki Kitamura stars as masterless samurai Kyutaro Madarame, a feared swordsman who has fallen on hard times in old Edo. Caught between two warring gangs in an epic battle of cat lovers and dog lovers, he begrudgingly accepts the canine faction's offer to assassinate the opposite leader's beloved pet: an adorable white cat. Yet upon raising his lethal sword, he cannot bring himself to go through with the act, and the cat melts his ronin heart. But before finding peace as a newly minted cat person, the still fearsome Madarame will have to take on both gangs in a classic samurai street brawl.

改编自畅销同名BL漫画，讲述了一名原本生活完美的精英男，意外失去所有——父母、事业、未婚妻。丧失继续活下去的勇气，生无可恋的他藉着醉意，意图跳楼自杀。之后遇到男二，并一步步地爱上了他的故事。