Chat Noir, a supernatural cat spirit, is consumed by rage after CheerRat dupes her with a false promise of a place in the Chinese zodiac. Determined to take revenge, she begins hatching an elaborate plan. But when her loyal followers tell her she must first understand the human world if she hopes to succeed, Chat Noir takes an unlikely step: becoming an office worker. There she meets the handsome Ikebata, and for the first time, experiences the unexpected power of love.