Description：Ou Mijia (Eric Ng) is a clerk with a mild personality. He is often pranked by others and has become accustomed to it. Ou Mijia has a crush on the female nurse Dkny (Athena Chu), but is unable to get close to her. Ou Mijia accidentally discovers the affair between the company's prince and is tricked by the prankster he invited. He even loses his job and has to join the "super prankster" Holland (Natalis Chan). Since then, he has learned the trickery from his fellow apprentice Wu Guangde (Lui Chung-tak) and others. Soon, Columbus (Lucy Lui), the son of Hong Kong tycoon Mr. Ko, invites Holland and his friends to prank Xiao Xiao in order to expel his father's illegitimate daughter, Xiao Xiao, who was left in France. Unexpectedly, Wu Guangde has a special liking for Xiao Xiao. In addition, Mr. Ko's personal nurse is Dkny, so Ou Mijia and others have no intention of playing tricks on Xiao Xiao. Columbus is furious and invites the prankster to clean up the mess.