Omega (Eric Ng) is a gentle clerk who is often teased by others. He is used to it. Omega has a crush on nurse Dkny (Athena Chu), but is unable to get close to her. Omega accidentally discovers the affair between the company's prince and the prankster he invited. He loses his job and has to join the "super prankster" Holland (Chen Baixiang). Since then, he has learned the trickery with his fellow apprentice Wu Guangde (Lui Chung-tak) and others. Soon, Columbus (Lui Yu-yeung), the son of Hong Kong tycoon Mr. Ko, invites Holland to prank Xiaoxiao in order to expel his father's illegitimate daughter Ko Xiaoxiao in France. Unexpectedly, Wu Guangde has a special liking for Xiaoxiao. In addition, Mr. Ko's personal nurse is Dkny. Omega and others have no intention of playing tricks. Columbus is furious and invites the prankster to clean up the mess. So a melee in the prank world is about to break out...