Ex-cop Zhang Zili, seriously wounded five years ago while working on a gruesome coal-plant murder case, was forced to retire from the police force. Now, the killer strikes again, and Zhang, working as a factory security guard, is determined to redeem himself and solve the case on his own. After his investigation, he discovers that all of the victims seem to be related to a mysterious woman named Wu Zhizhen who works in a dry cleaning shop. Zhang ends up falling in love with her, but in uncovering the truth finds himself in great danger. Golden Bear, Berlin 2014.