Singer Lim Giong plays a KTV errand-boy who takes shelter in a coffee-shop. He unthinkingly picks up a notebook left behind by a customer played by Yip Yukhing, and becomes embroiled in the stormy relationship between a gangland boss and his mistress.
歌手林強飾演的 KTV 外務員，因大雨到路旁咖啡廳裡避雨，無意撿到客人葉玉卿遺留的筆記本，而捲入黑道大哥與情婦間的糾結。