The story of missing children

On the morning of winter solstice, Yang Yuan (David) is ready to send his son to school as usual, but his son mysteriously disappears in the corridor. While searching for the whereabouts of the child, a bigger mystery is inadvertently involved: the decadent Yuan Wu (Vision Wei) lives a double life of pretending to be decent with his father, but one day he meets an accident in the rental house.

Landlord Lin Chuping () suddenly moved out of his residence in a hurry, and the originally calm and stable life was completely disrupted. These seemingly unrelated strangers overlap in different time and space. With the disappearance of children, a series of secrets about love and redemption gradually surfaced.

Lin Chuping, the landlady played by Kelly, has a gentle personality, but her life has changed a lot because of an accident six months ago. Dany Lee plays Zhang Ye, a policewoman who investigates the disappearance of "missing children". She is strict in character, intangible in emotion and meticulous in handling cases. David and Li Sheng play the children's parents.

Yang Yuan (David)' s son disappeared in the stairwell. While looking for the whereabouts of the child, he inadvertently involved another bigger mystery. Yuan Wu (Vision Wei), a decadent man, lives with his father and pretends to be decent, but one day, he has an accident in the rental house. The landlady, Kelly, suddenly moved out of the house in a hurry, and the originally calm and stable life was completely disrupted.

These seemingly unrelated strangers overlap in different time and space.