Set in the tumultuous 70s and 80s in Hong Kong, a group of young people from different backgrounds pursue their dreams amidst the rapidly changing city. Tian Yongtai accidentally kills someone and goes to prison, where he befriends Xu Weikang. After his release, Tian's complicated love triangle with his ex-girlfriend and a friend leads to unexpected challenges, with Weikang becoming a formidable foe. The drama explores themes of friendship, love, and justice as Tian faces a difficult choice.

　　故事横跨香港充满跌荡的七、八十年代，一群来自不同社会阶层的年轻人，在这个风云际会，瞬息万变的大都会中，各自追寻他们的理想。

　　青年田永泰（张兆辉）因一时糊涂，与其女友董亦宁（刘嘉玲）好友曹锦仪（戚美珍）发生关系。曹锦仪珠胎暗结，永泰更因此事错手杀人，致身陷囹圄，好友梅志培和张望人亦爱莫能助。狱中永泰发奋图强，遇上深沉狡黠的许韦康（石修），两人成为朋友。

　　出狱后，永泰与宁感情告终，又见锦仪已嫁了韦康，惟有寄情工作。惜天意弄人，永泰、锦仪再生情愫，造成复杂的三角关系，韦康更试图对永泰不利，幸永泰最后掌握韦康的犯罪证据，在友情、爱情和正义的冲击下，究竟永泰作出什么选择呢？本剧自有分晓。