In Hong Kong, a terrorist organization plans to blackmail the world's government with the help of two fatal diseases a goofy scientist created. Two Interpol agents went to stop their evil plot of world domination, but one of them became a victim of one of the diseases and wanders off acting like a six-year old child. He mindlessly walks into a bullied action film star's mansion, and the star, Jones Bon, was forced to babysit him while dealing with affairs involving his divorced wife and his two daughters. Only a short period of times has passed when Jones, although paying more attention to solving his family situations, finds himself fighting the terrorists.
梁家輝
as Jones Bon
余安安
as Isabel
鍾欣潼
as Cream
陳小春
as Tienan
杜汶澤
as Love Kwan
毛舜筠
as Barbara
葛民輝
as Dr Donno
徐錦江
as Lungyi
陳冠希
as Ronald
詹瑞文
as Mr & Mrs Tung
Wai Wah
as Banana
陳惠敏
as Great
