Synopsis：Zhong Xian, an ordinary worker, lives with his sister Zhong Wan. On the eve of Zhong Wan's further study at a prestigious overseas university, this promising girl fell naked from the Qin Group building where Zhong Xian worked and died. Although the police determined that Qin Hao, the chairman of Qin Group, was suspected of rape and Qin Lang, the second son, was premeditated to murder, due to the overwhelming power of the Qin family, they finally hastily closed the case as an "accidental slip". Seeing the real murderer at large, Zhong Xian decided to perish with Qin Lang, but was instead taken in by Qin Feng, the eldest son of the Qin family. This seemingly gentle heir recruited Zhong Xian into the socialite club he ran, using revenge as bait to refine him into a sharp blade, intending to use the knife to stir up the secret battle between Qin Hao and Qin Lang.