Confirmed bachelor Man Suen, a university professor, must get married by the age of 35, otherwise he and his playboy brother, Ray Suen, won't inherit his father's fortune of 50 million dollars, which will then go to his uncle. He is unaware that his colleague, the prim Miss Cheung, is in love with him and that she dreams of being rescued by her hero. His brother has met a young heiress, but his uncle has hired a sexy siren to prevent the marriage.

The sexy antics of four now-adult classmates. Chu, the only male, is unsure which of two of the group he really fancies. The girls are conveniently named Lan, Kwai and Fong. Lan fools around with her wealthy boss. Later, the group make an amateur X-rated film to make money.