On the first day to report for his duty, college graduate Paul (Leslie Cheung) strikes up an acquaintance with a pretty, young girl Monica (Maggie Cheung Man-yuk) at the metro, but is teased by a rich girl Anita (Anita Mui Yim-fong), who admires him. Anita tries by every possible means to win Paul’s favor even by bribing his parents-but without success, as Paul has fallen in love with Monica. Meanwhile, Monica has not only been entangled in a love affair with a married man Ben (Tang Chen-tsung), who offers to marry her by divorcing his wife, but is courted by her new colleague Wu Wei (Chan Friend). Finally, Monica decides to forsake all her lovers, but when Paul vows his true love for her, she offers to play hide-and-seek with him at the metro to decide their future.