To steal the Imperial Night Glow Pearl, thieves Eagle Knight (Yam Kim-fai) and Crimson Girl (Yu Lai-zhen) both infiltrate the household of Chiu Tailong (Leung Sing-po) as servants. When both Tai-long and his wife each attempt to woo the thief of the opposite sex, the marital squabble that follows becomes the perfect diversion for Crimson Girl to take the pearl. However, Eagle Knight refuses to let the pearl go, forcing Crimson Girl's master to interfere as the mediator. While the two thieves are the stars of the film, To Sam-ku and Leung Sing-po easily steal the show with their hilarious performances as Mr. and Mrs. Chiu.