Set in the 1980s, troubled youth Chan Lok-kwun accidentally enters the Walled City, discovers the order amidst its chaos, and learns important life lessons along the way. In the Walled City, he becomes close friends with Shin, Twelfth Master and AV. Under the leadership of Cyclone, they resist against the invasion of villain Mr. Big in a series of fierce battles. Together, they vow to protect the safe haven that is Kowloon Walled City.

A Qing encounters the photographer Xiao Qi at the full moon banquet of the daughter of the big brother Ren Ge at the corner of the Beiguan. They fall in love with each other. But, sadly, they aren't able to stay together at the end.

《角头2：王者再起》故事描述仁哥（王识贤 饰演）面对曾经的好兄弟，如今却“走味”变成‘最换帖的敌人’的刘健（邹兆龙 饰演）重现江湖，不断挑起纷争与冲突，破坏仁哥的忍耐与努力维持的和平。看着刘健的事业版图逐渐扩大，身边的兄弟为了情义有所牺牲，仁哥终究按耐不住释放出心中的猛兽，与亦敌亦友的刘健正式开战，为江湖掀起腥风血雨的厮杀。

勇桑（蔡振南 饰）是建国市场的老大，英明神武德高望重的他深受手下小弟的敬重和爱戴，市场里大大小小的事务均由勇桑主持。清枫（孙鹏 饰）是勇桑最信赖的手下，虽然并未挑明，但大家都知道，清枫将在勇桑金盆洗手之后接替他的位置。
因为杀人罪入狱三年的阿雄（黄鸿升 饰）出狱后回到了勇桑的身边，实际上他并未犯罪，而是替清枫顶罪。勇桑十分看重阿雄的能力，甚至决定将建国市场交给他管理，可是阿雄已心生退意，他不愿再重蹈覆辙，只想做一个干干净净的人，过宁静平安的生活。麦可（王阳明 饰）从国外深造归来，一心想要改变市场里奉行了多年的角头制度，他将第一个改革的目标放在了勇桑的身上。