The story begins with an undercover policeman lurking in a gang and accidentally becoming the gang boss. Unexpectedly, he is dragged step by step into a devil transport ship on the high seas by a drug lord. At this time, a mysterious third-party force is embarking on their road of revenge, and the entanglement of fate begins. In the competition between the three forces, fierce fighting, knife fights, gun fights, sniper battles, remote-controlled bombs, escalate step by step. Between law and emotion, love and hate, brothers and women, some things must be done by someone.