A man's body was found in the wetland beside Erlong Lake in Siping City. The police launched a full investigation. Suddenly, a night-shift taxi driver Yang Dawei surrendered to the police headquarters. Night before Dawei meet classmate, drunk as a lord that resulting in an accidental collision on the way. But it was only first step that led to another vicious criminal case

Journalist Ye Pan is looking for the truth behind a puzzling double fall. During her investigation, she reports nurse Li Yue and mother You Xi as suspects, which triggers public outcry and the situation gradually gets out of control.