In the dead of winter, a mentally ill woman stops a passing vehicle to report that her husband has committed murder. Her shocking accusation leads detectives Shen Dongliang and Wu Hongbing to uncover the truth behind a series of gruesome dismemberment murders. But before the dust can settle, a string of new crimes erupts—a deadly savings bank robbery, the disappearance of a teenage girl, and a violent carjacking spree. As Shen and Wu pursue the perpetrators, they are drawn into a devastating human tragedy that will forever alter both of their lives.