Li Xiao was falsely accused of being the real culprit in a series of murders. The evidence was conclusive and he was wanted throughout the city. He fled for seventy-two hours, but found a corpse in an abandoned cold storage that had been deliberately placed as a sacrifice - a code that only Jiang Jin could understand was engraved on the inside of the corpse's wrist. That old friend who had been imprisoned for him but now disappeared was actually deeply entangled in the murder. Li Xiao refused to run away and began to chase the murderer in the opposite direction. Jiang Jin, as the deceased, was standing in front of the surveillance screen in the evidence room of the police station, calmly watching his every move.