Ji Yunshen is a legend in the legal world, cold-blooded and rational. He has personally sent countless criminals to prison, but he was forced to a desperate situation in a shocking injustice case. When he discovered that the real man behind the scenes was Cheng Tingyu, a prosecutor he once regarded as his sister, the regretful verdict in the court became his faith torn to pieces with his own hands. He no longer fights for justice, but only fights for revenge. As for Cheng Tingyu, her smile was as gentle as ever, but her eyes were as cold as ice. She had known that sooner or later he would tear it to pieces - because that sentence was originally a trap set by her. When the law becomes a weapon, every step between them is a life and death game.