"When I loved you, you were a hero's tombstone; when you loved me, I was a stranger and a sinner."
The criminal investigation team leader is suspicious and in love with the airborne psychological consultant, and discovers that he is actually the stand-in for Bai Yueguang, who "died in the line of duty" three years ago. The bloody game left by the serial killer points to a cruel atonement that spans life and death.
