A girl who wants to be a cat in her next life, quiet and indifferent; a good-looking boy; clean and sunny. A singer, some songs, and a pair of headphones tightly connect their love together. A girl who carelessly hides her sadness and two different boys make her lose her original appearance after experiencing the sweetness and hurt of love. Perseverance in dreams, confusion in love, unexpected fate and unforgettable choices, what will happen to their story?