One night, Li Li found his dog's throat had been cut, she began to looking for the murderer who killed the dog. Any one of the family was the suspect, her husband holding a dagger in the dark, dismal mother in law, variant son, frightened little nanny......Any one in the family is experiencing unprecedented difficulties and each face is showing their broken hearts. They all have the stories but could not say to others, which make everyone in the family go to the hopeless area finally.