Joe（邓光荣饰）为人正直、有义气、处事从不拘泥苟且。 Joe之兄长误交损友，被亡命之徒所谓「兄弟」（张国柱、江富德、周比利分饰）陷害，身陷囹圄。 Joe替其兄不值，向匪徒讨回其兄应得之巨款，岂料匪徒们因财失义，顿起杀机。 Joe不防暗箭，急逃以避其锋。危急之际，幸遇一美丽动人的芭蕾舞教师Ann（郑文雅饰）义助，得以脱险……

Joe is betrayed by his gang, who then set out to kill him. On the run, he forcibly enters the apartment of Ann. Despite being initially scared, Joe departs on fairly friendly terms, and catches up with Ann again the next day at her work. One of Ann's students is Sweetie, whose father Mr Fung dotes on her. Fung, a jeweller, is also being romantically pursued by one of his employees, Elsa. The following day, Joe's old gang rob Fung's jewellery shop, during which time they snatch Sweetie.