高歌（盛一伦 饰）是一名90后的技术性宅男，满脑子都是常人无法理解的奇思妙想。高歌的母亲一直坚信他是她和著名歌手罗大佑的孩子，这个女人甚至打算将这件之情公之于众，为了阻止母亲疯狂的举动，高歌带着母亲前往深圳，说是要带她去找罗大佑当面对质。哪知道刚刚抵达深圳，高歌就和母亲走散了。在朋友余薇（郭姝彤 饰）和豆豆的陪伴之下，高歌踏上了寻母之旅，之后和母亲曾经的工友相逢了。从工友口中，高歌震惊的得知，母亲曾经诉说过的那些被他视为是无稽之谈的过去，竟然真的发生过，而母亲平凡的表象之下，掩藏了一段连他都觉得羡慕的疯狂过去。

香港的屋邨区贫穷落后，屋邨的大人们都忙于生计而无暇管教自己的小孩。屋邨的小孩子整天无所事事，拉帮结派。这里，成了黑社会滋生的温床。山鸡（陈小春 饰）正是成长于这样的环境中，他整天和包皮（林晓峰 饰）、巢皮（朱永棠 饰）、大天二（谢天华 饰）混在一起，渐渐长大，成了香港制造的典型古惑仔。山鸡从小就喜欢邻家青梅竹马的小女孩芝芝（梁咏琪 饰），但芝芝不喜欢和古惑仔来往，渐渐疏远了山鸡。山鸡一次偶然机会发现芝芝出来当舞女，原来芝芝母亲病重，急于用钱无奈之下芝芝才出来当舞女。山鸡帮助了芝芝，芝芝母亲觉得山鸡为人不错，临终将芝芝托付给了芝芝。山鸡决定送芝芝回澳门定居，但此时横生枝节，两人最终能否终成眷属？

This production of 'Twelve Angry Men', written especially for Studio One, is shorter than the film version and leaves a few twists and turns of plot undeveloped, but it is fifty minutes of class nevertheless. For many years this episode was thought to have been lost. The Museum of Television and Radio (now the Paley Center) had only the first 30 minutes of the hour-long program on a kinescope provided by CBS - the only version CBS had. After nearly 30 years of searching, a copy of the complete program was found in 2003 by filmmaker Joseph Consentino, who was working on a documentary about noted defense attorney Robert Leibowitz (Leibowitz reported on the Charles A. Lindbergh baby kidnapping for the NY radio station WHN) and found a copy of the show in the archives maintained by the children of Leibowitz, Robert Leibowitz and Marjorie Leibowitz Finch. Samuel Leibowitz requested and received a commercial-free kinescope copy of "Twelve Angry Men" from CBS shortly after it aired because of his interest in legal issues. The Leibowitz children donated the kinescope to the museum and it had a re-premiere in May 2003.

1950年代，晋中某地农村。村长范登高（王秋颖 饰）不热心集体生产，私自进城跑买卖，群众意见很大，民兵队长王玉生（秦汉 饰）对此非常不满，两人发生争执。村长的女儿灵芝（田华 饰）和糊涂涂（郭筠 饰）的儿子有翼（杨启天 饰）都是共青团员，彼此有好感。他们痛恨自己家里人思想落后，灵芝生性泼辣，敢于斗争，有翼则性温胆怯，对落后势力采取妥协态度，灵芝渐渐看不起有翼，最终把爱投向离了婚的玉生。痛苦的有翼认识到软弱给自己带来的危害，他在玉梅（陈琳 饰）的帮助下，同落后观念进行斗争，赢得了玉梅的好感并和玉梅相爱了。在三里湾党支部的领导下，青年人走集体化道路的决心更大了......本片据赵树理小说《三里湾》改编。