Li Jie, a lawyer, is taking divorce proceedings to try to get custody of her daughter. As she is working hard to earn a better life for her daughter, she hires a baby sitter, Sun Fang, to watch her child. One day, Li comes home only to find her child and Sun have disappeared. Unfortunately, Li is suspected by both her family and the police, and must lean on herself to trace Sun alone.

A story centered around a divorced couple living in a southern Chinese city Shenzhen and dealing with the disappearance of their missing son.