Four carefree lovers in Hong Kong enjoy their youth while danger looms on the edges.

Based on a legend in Buddhist mythology, this tells the story of a religious disciple who defies rules and reads from an ancient scripture that turns him into a huge crocodile.

Seeking vengeance, a man is directed by a sorcerer to cut his child out of his pregnant wife so he can create a miraculous 'ghost child'. Overhearing this conversation, his wife flees into the forest where she ends up giving birth to twins with the help of a kindly woman living there. Afraid her husband is chasing her, the wife flees further into the forest with just one of her children, but dies when she falls off a cliff after being chased by wolves. The wolves raise the child as one of their own, whilst her twin sister is raised by the kindly woman living in the forest.

Ma Tsai-Tung, a vagabond, doesn't have enough money to pay for his meal in a restaurant. He is beaten up but is saved by pretty Shirley and her fiancé Buffalo Hsiung with the help of their friend Ken Chan Lee. Restaurant owner Kao, hears that Ma is still alive, so he decides to finish him off.