CHAU CHEUNG YAU suggests removing to a bigger house. CHOW WING objects. Their son, KIM HUNG tries to negotiate between his two fathers. Once, YAU brings his girlfriend home and he blames WING for spoiling his privacy. So he entreats HUNG to move out with him leaving WING in the old residence. WING also exhorts HUNG to stay. In order to maintain peace, HUNG stays alternately in the two houses. One night HUNG, in the identity of a part-time taxi-driver, meets TSE BIK WAH who is rushing to a motel to arrest a suspect ADA. HUNG has mistaken WAH as a club-girl but actually WAH is a woman-inspector.