Sung Tse-ho and Mark are blood brothers in the Triad. Ho's own brother, Tse-kit, is a policeman, and Ho leads a double life. Ho is in Taiwan for a counterfeit money deal when local gangsters ambush him. His right-hand man, Tam Shing, betrayed him. Mark goes to Taiwan to take revenge for Ho, but is wounded and becomes a cripple. After serving three years in a Taiwan prison, Ho returns to Hong Kong hoping to start a new life, but his brother Kit still distrusts him. Ho sees Mark, who has become a bum, opening the car door for Shing, who is now the headman of a gang. Shing wants Ho to become a gangster again, but Ho refuses. Shing then sets a trap for Kit and beats Mark to within an inch of his life. Mark also hopes to pair up with Ho again and make a comeback, but is turned down by Ho. Mark then goes alone to Shing's lair to take the plate for making counterfeit money. Ho can't stop himself from helping Mark. He asks Shing out for a meeting and at the same time mails the plate to Kit. At