田继安(郭晋安饰)本为大澳天之骄子，性格敦厚，自信澎湃，但继安仍决定出香港发展。继安发现父亲在港另娶妻李秀丽(陈曼娜饰)，初甚感不满，但后来发觉秀丽爽朗无机心，渐渐接纳她。

继安与父发生意见，遂与表哥胡志勇(李国麟饰)同住。志勇当差十年，为人不修边幅，认为继安是其克星，不大喜欢他；相反，志勇妹胡志敢(黄宝欣饰)，性格乐观，好动如男孩，与继安十分投契。

志勇有老友周连富(李家声饰)，他年少得志，自负自恃，初时觉继安蠢钝，对他十分轻视。连富有姊周连贵(商天娥饰)，与志勇自小为死对头，至志勇被女友蔡妙玲(张凤妮饰)舍弃后，志勇极度消沉，因缘际会反与连贵变成知己，后更发展出一段微妙感情。

继安钟情于邻家女孩程安珮(梁佩瑚饰)，奈何安珮对他无意，继安只能守于安珮旁，幸最后终能赢得美人心。

继安、志勇、连富各具不同性格，由冤家而成为好友，互相关怀勉励，最后三人更合力创出事业。

Tin Kai-On moves to Hong Kong from his hometown and initially resents his father's new wife, but gradually comes to accept her. Kai-On lives with his cousin, who dislikes him, and befriends his cousin's sister, who is tomboyish. Kai-On also has a crush on his neighbor, who initially rejects him. Kai-On, his cousin, and a childhood rival eventually become close friends and start a successful business together.