Sung Tse Ho and Mark are triad brothers, while Tse Ho's own brother, Tse Kit, is a police officer, so Tse Ho has to live in two identities. Tse Ho is ambushed by local gangsters when he goes to Taiwan to trade counterfeit banknotes, and the person who betrayed him is his favorite, Tam Shing. Knowing what happened, Mark traveled to Taiwan to avenge Tze Ho's death, but was wounded by a bullet and became crippled. Tze Ho serves a three-year jail term in Taiwan and returns to Hong Kong hoping for a new life, but Tze Kit does not understand him. Later, Tze Ho, Mark and Tam Shing have a gunfight in Sai Sha Wan, and Tze Kit follows them there. During the shootout, Mark was shot dead and Tam Shing was also shot by Tze Ho. Tze Kit finally forgave his brother. ......