In the newly opened subway, the young man Chen Baoluo (Leslie Cheung) fell in love at first sight with Monica (Maggie Cheung) who was on the same train, but unfortunately, another passenger, Annie (Anita Mui), took the opportunity to tease him. These young people soon scattered in the vast crowd. The newcomer in the workplace, Chen Baoluo, began to rush for work, while Monica was restless in order to sort out an old relationship with her boss. One day, Paul and Monica met again, and the rich lady Annie also appeared again, half teasing and half teasing Paul. Monica found a new job and was harassed by the lustful new leader. Paul, with the secret help of Annie, officially pursued Monica and fought against the latter's lustful boss. Monica considered accepting Paul's love but finally backed off, claiming to hand over their love to a fate game in the subway. In the chaotic flow of people, Paul and Annie went to find the missing Monica together...