集团董事长身患重病卧床不起，命不久矣的他希望能够在死之前看一眼自己流落在外的孩子，经过了多方搜索和调查，余慕缇（关颖 饰）被认为是他的亲骨肉。就这样，余慕缇的身世之谜解开了，虽然来到了这个富有的家庭之中，但实际上，余慕缇的地位非常的岌岌可危，她的身边可谓是草木皆兵。

　　Cash（郭品超 饰）白天是精明能干的赚钱机器，在职场上如鱼得水总是能够轻易完成客户委托的案件，一到夜幕降临，他便会流连在百花丛中，享受轻而易得的女人们对他的仰慕和追捧。然而每当天蒙蒙亮，狂欢结束之时，Cash都会感到一种深深的空虚感。这一天，他在街头看到了不修边幅素面朝天的余慕缇，他知道自己坠入了爱河。

Cash and his step-father make a living by cheating money from other people. Deception is just a piece of cake to Cash who possesses much physical charm. One day he runs into Yu, the illegitimate daughter of a rich man. His sympathy for her urges him to help her get back what she deserves, but little does he know, he is actually stepping into a trap...