Unmarried mother Di Di arrived at a postpartum care center with her newborn daughter, unaware that a murder had recently taken place there. By chance, she ran into Lin Ziqi, the child's biological father, who knew nothing about the baby.
To keep Lin Ziqi from finding out, and to help her colleague Li Rui investigate the case of a woman who fell to her death at the center, Di Di decided to pose as Li Rui's wife. She became the child's fake father.
As the investigation deepened, Di Di discovered that the murder was closely connected to her, and that the child's real and fake fathers were about to wage an open and covert battle over who would claim the role of father...
