Gwen Cummings is a successful New York writer living life in the fast lane and everyone's favorite party girl. She shares this roller-coaster lifestyle of hopping from dance club to bar to hangover with boyfriend Jasper-handsome, magnetic and equally attracted to life on the wild side. Life is just an exercise in debauchery-until Gwen's ungraceful display at her sister Lily's wedding, when she gets drunk, commandeers the limo and earns herself a DUI and 28 days in court-ordered rehab. There, Gwen comes face to face with a unique set of rules (like no cell phones) and rituals (like chanting) embraced by an assortment of fascinating fellow re-habbers: Eddie, Gerhardt, Oliver, Andrea, Roshanda, and Billie Jean. A jaded city girl to the core, Gwen is determined not to conform. Then she meets Counselor Cornell, who begins to break through her carefully constructed defenses and force her to take a closer look at who she really is. Ultimately, through the companionship of! her group as well as a devastating loss, Gwen gradually loses her cynicism and begins the long struggle to take back her life. Maybe, she discovers, your insides can match your outsides.

　　阿保（雷宇扬 饰）、阿东（陈小春 饰）、螳螂（郑浩南 饰）、勇仔四人是社团内的刀手，专事清除社团的敌对人物。四人入行多年，在社团内地位颇高的同时也要面对无休止的杀伐跟其他社团的敌视。阿东行事稳重，投资各类事业，为几位兄弟的未来多有筹划；阿保做事极端，为螳螂出头得罪了尖沙咀大哥蛇皮，阿保发现女友艾薇（蒙嘉慧 饰）与阿东的暧昧视频，兄弟感情出现了嫌隙。
　　阿东等人谋划除掉蛇皮，却被老大公子（曾江 饰）向警方出卖，侥幸逃脱的阿东、阿保放弃偷渡，返港为死去的手足报仇。

　　斯威迪（Enguerran Demeulenaere 饰）出生在一个富裕的家庭之中，他的父亲是知名的制片人，家里来来往往的都是在电视里光鲜亮丽的大明星。然而，这种外人羡慕的生活却并不能够给斯威迪带来真正的快乐。某日，父母决定领养一个名叫阿尼巴尔的印加男孩，对于父母的决定，斯威迪当然是强烈反对，他怎么能够容忍另一个孩子来和他争夺父母的爱呢？但抗议最终还是徒劳，不久之后，阿尼巴尔出现在了斯威迪的面前。
　　斯威迪对待这个和自己并没有血缘关系的弟弟非常的粗暴，处处欺负他，找他麻烦，但阿尼巴尔却似乎并不讨厌斯威迪，总是跟在他的屁股后面到处跑。