这部滑稽动作片并没有什么合理的故事情节，剧情也非常简单，一句话，就是小妹头露云娜被几名恶人追杀，被面恶心善的修车师傅大煞星乔宏出力相救……但是这部作为吴宇森早年在嘉禾电影公司拍摄的喜剧电影，当年可是香港票房前三名哟！

Ah Sing (Roy Chiao), un simple mécanicien, est témoin de l'enlèvement de Gayle (Rowena Cortes) une jeune orpheline également chanteuse et idole des jeunes. Ah Sing sauve la jeune fille mais ne sait pas encore dans quel pétrin il s'est fourré car le père de Gayle n'est autre qu'un grand voleur ayant caché son trésor que ses anciens partenaires tout juste sortis de prison sont bien décidés à récupérer.

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...

유명 가수인 여주인공이 고장난 차를 수리하기 위해 정비소로 향하고, 그곳에서 어떤 아저씨를 만난다. 그 후 여주인공이 위기에 처할 때마다 정비소 아저씨가 여주인공을 구한다.