She is an arrogant, principled woman, just like a sweetheart is a sweetheart in her heart and cannot become a lover. When she met the love of her life, she thought that experiencing more was to have a better life. However, a series of strange things happened one after another: the lingering meow of a black cat, the sudden move of the roommate, the inexplicable silence of the sweet horse, the strange behavior of the husband, the eyes that glowed with tears in his sleep...