The undercover Lee Chi-Kit, shrewd and capable, is responsible for investigating a drug gang. He becomes friends with an assassin named Eva and falls in love with the mistress of the gang leader, Judy.

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.