The murder of a crewman while ashore in Hong Kong leads his friend and shipmate to partner with a local to find the killer. The murkier back alleys are explored and periodic fights break out as someone wants their investigation to end.

Chou Hsiu-Lan plays Ting-Ting, a teenage girl who's starting to get interested in love and romance. Teenage pop star Rowena Cortes co-stars as Shan-Shan one of her best friends, she's a rich girl who has a streak of larceny within her.

On that side of the track is Ah Sing (Roy Chiao), uncouth, unkempt, a garage repairman, a bravado with plenty of tricks up his overall sleeve. And on the other side of the track is rich, young recording artist Gayle (Rowena Cortes), idol of the young with her songs and dances, but an orphan. Harry is her manager. They should not meet, least to say forming some kind of partnership, but they do. Gayle goes to Ah Sing's garage for repairs. When Harry and she drive off, the car's undercarriage Ah Sing and drags him along. Fate steps in the form of five toughles who stop the car and kidnap Gayle to a farmhouse. It so happens that Gayle's father and the five were robbers but the father took off with all the money while the five were caught. They want the money back now they have served the time...