The story happened to a girl who thought she looked very ordinary. She traveled back in time when she came home late, and experienced the betrayal of her friends, the misunderstanding of her lover, and the rejection of the people around her in a different world. After experiencing all kinds of despair, she decided to go to the road of death. When the girl died and her lover knew the truth, the lover missed the girl and could not dissipate the sadness, so he decided to travel through time and space to find the girl.