China O’brien; big city police woman; martial arts trainer, is forced to hand in her badge and head home to her father and the small town where she grew up. The peaceful town she knew is now struggling against the clutches of organized crime. When her father, the town sheriff, is killed China decides to run for his position and clean up the town. The poll results spark a series of confrontations that finally decide who runs the town
科尔（刘易斯·陈 Lewis Tan 饰）是一名身手非常矫健，但生活十分落魄的拳手，某日，他莫名其妙的遭到了冷冻术士绝对零度（乔·塔斯利姆 Joe Taslim 饰）的追杀。在特种部队少校贾克斯（麦卡德·布鲁克斯 Mehcad Brooks 饰）的帮助之下，科尔死里逃生，并且启程开始寻找一位叫做索尼娅（杰西卡·麦克娜美 Jessica McNamee 饰）的女子。 之后，科尔来到了地球阳间守护者雷电（浅野忠信 饰）的神庙之中，在这里，他遇见了战士刘康（林路迪 饰）和佣兵卡诺（约什·劳森 Josh Lawson 饰）等人，他们唯一的共同点就是身上都有着神秘的龙形标志。一行人即将在这里接受非常严酷的训练，以对抗来自异星敌人的侵略，保护宇宙的和平。
