Antonio, a travelling missionary priest, seems innocent — until he wields his cross (containing a hidden treasure) as a weapon during a train robbery. While on the train he befriends a man named Dragon, who helps him fight the bandits who want the cross.
Wang Yu as a pimp with redeeming qualities — concern for a hospitalised sister and love for a "good" girl — which throw him into conflict with his boss, with fist-fights and killings, as the inescapable result.
