Jade Qiao died in childbirth and became a staff member in the underworld. After working diligently for ten years, she learns that her son is being abused by an 'evil stepmother' and is destined to grow up as a serial killer. To change her son's fate, Jade temporarily returns to the living world for a month. Once there, she fiercely protects her child and heals her husband, who is suffering from severe depression. At the same time, she also helps her husband eliminate the mastermind behind the tragedy. In the end, the family of three reunites in a peculiar way.
