CHING SUM works for a pharmaceutical company called Man Shui Tong. His younger brother, CHING YEE, works there too, and he is a manager. SUM and YEE go to a commercial shooting with their boss LO CHUNG-CHUN. When they finish, SUM takes the models to one of the company’s retail shops to get some souvenir. Meanwhile, his wife, KO LAI-SUM, calls. LAI-SUM is an overbearing woman. He lies about where he is, and then LAI-SUM appears right in front of his eyes! LAI-SUM’s mother, KAM NGAN-FA, used to be the leader of a triad. The mother and daughter run a transportation company called Dragon Logistic Transport Co. They have four staff, who are better known as the FOUR KINGS. FA and the FOUR KINGS defend SUM. SUM wants to answer LAI-SUM’s call, but his mates, who are also his junior team members, KWONG SUN-SO and HUNG TSEUK-SHEK, do not let him. So LAI-SUM goes to SUM’s company instead……