《鬼马姑爷仔》讲述年青歌手阿辉(李振辉饰)，驻唱某餐厅，深受少女欢迎。餐厅老板方先生(朱牧饰)表面为一下正当商人，实另有后台老板邓先生(林伟棋饰)支持暗营黑业，为非作歹。方欲利用辉年青貌俊作鱼饵吸引少女上钓为其操皮肉生涯，设下杀人陷阱。辉不知内情，被迫签下一纸十万元欠据，作为方代其赔偿死者家属及掩口费用，自此辉即受制方之恶势力之下...

A popular singer named Ah Hui is approached by gangsters who want him to perform at their nightclub. When Ah Hui rejects, they set him up by making him believe he murdered an innocent man; Of course, Ah Hui falls for it. With nowhere to turn and the fear of being sent to jail, Ah Hui accepts help from the gangsters. In return he has to sign an exclusive singing contract with them. Little does Ah Hui know, they have other sleazy plans in store for him.