Serial murders are sweeping Haicheng. All seven female victims were strangled, and each had a bracelet-shaped mark on her wrist, ranging from iron and copper to silver. The pattern of where their bodies were dumped spreads outward from an abandoned orphanage.
The brash detective Xiao Yan stumbles upon the case's hidden truths. The composed forensic pathologist Lu Zheng conceals a buried past. Shen Yanting, a criminal psychology expert specially invited by the municipal bureau, turns out to have been Lu Zheng's classmate at university. The three are drawn together by the murders. Old orphanage records reveal a shocking past: Chen Yuan, an orphan who disappeared many years ago, is the revenge killer obsessed with "bracelets." Twenty years earlier, his silver bracelet was taken from him and he was subjected to endless humiliation. His uncle committed murder for his sake, and the two fled for twenty-five years. Now they have returned to repay the stolen childhood and dignity with seven bracelets and seven lives.
Redemption and sin intertwine, while obsession finds peace with the past. A wait spanning twenty-six years, along with the obsessions and hopes of redemption, slowly draws to a close amid the daily reckoning of crime and punishment.
