Police academy student Chen Mo avenges his father and desperately infiltrates the gang. He uses police intelligence as a blade to fight his way through the underworld and eliminate the gangsters who tortured his members. However, he falls into a fatal dilemma - he must hide the police's suspicion of "undercover gangsters" and resist serial assassinations. Cut off the chain of drug and human trafficking, but the court's scale pointed to his bloody hands.
When justice must be stained with blood, can you still recognize yourself? In the game of black and white, is the boundary between good and evil a blade or an abyss?
