1874, East Texas. Two friends pursue the Posse, a group of sadistic human traffickers who have kidnapped five women. Along with an Indian scout, they race against time to find and free the women before the traffickers sell them to sex-slave buyers at the Mexican border.。鸦片战争后,西方列强用枪炮打开了中国的门户,肆无忌惮地用各种手段对中国进行残酷的掠夺。尽管世界上贩卖黑奴的活动已逐步衰退,但是贩卖华工这一罪恶行径,却在中国东南沿海兴盛起来。英国驻厦门的领事查理士,接到威廉爵士的一封密信,要他从中国运送500名华工到澳洲去开掘金矿……。