一条地下运毒链条牵扯出帮派小头目老狗（姜武 饰）、地头蛇三哥（包贝尔 饰）等人所在的地方帮派的交易网。在老狗管理的狗市里，愣头青东子（刘奕铁 饰）阴差阳错地卷入这场漩涡中，并获得老狗赏识成为其最心腹的小弟。帮派老大葛爷的离奇暴毙，让权力真空引发惨烈厮杀，几大狠人血拼上位，神秘势力暗中操盘，然而东子的身份也似乎并不简单。在情谊和生死面前，人性赌局的考验也让事态变得越来越扑朔迷离。
A sniper returns home from Afghanistan to his small Northern town. Confronted with the mundane reality of everyday life he longs for the release provided by shooting. Slowly his need for regimented military discipline takes over leading to violent confrontation.
