当营业经理的阿信与美貌性感的妻子美美过著幸福美满的生活，直至爱丽丝的出现令阿信的生活泛起涟漪。爱丽丝是某美国名牌健美器材推广副总裁，她来港欲找东南亚总代理，刚巧她的经理人彼德是阿信之旧同学，故此阿信的胜望颇高，但一次误会却激怒了她。彼德迷上了美美，为了破坏两夫妻的关系而再次安排阿信与爱丽丝会面，并从中作梗。爱丽丝在戏弄阿信的同时，两人在交往中不知不觉渐生情愫，却被美美发现。相逄恨晚，这段情注定只能埋在心里，爱丽丝唯有选择设法令他们和好而自己就黯然离去。

阿信剛升任為營業經理，與美貌性感妻子美美生活美滿，某美國名牌健美器材推廣副總裁愛麗絲，到香港卻找東南亞總代理，阿信銜名去爭取代理權，愛麗絲之經理人彼得答應大力幫忙。惟阿信竟將愛麗絲開罪了，另一方面彼得卻對美美入迷，更悉心安排阿信與愛麗絲再次見面，愛麗絲有心捉弄信，但信不知情卻處處維護愛麗絲，她深受感動，情愫漸生。美終發覺丈夫與愛麗絲之間的親密關係，決意離開，最後，愛麗絲費苦心用計令阿信夫妻和好如初，而自己卻黯然離去。

Ivan is a sales manager and enjoying couple life with his charming, sexy wife called Mimi, but the appearance of Alice crushes their relationship. Alice is the Vise President of one of the biggest Aerobics Equipment company, looking for appointed agent in Hong Kong. Coincidently, Alice's manager Peter is Ivan's old schoolmate, he promises Ivan to put him into the group. In order to chase Mimi, Peter sets up tricks to ruin her relationship with Ivan. He makes chance for Ivan and Alice to meet, and they fall in love gradually. Mimi discovered their relationship and decided to leave Hong Kong. A courtship cannot exists three people, Alice chooses to explain to Mimi that all things are set up by Peter, then she leaves and Mimi and Ivan back to their perfect couple life.