由一个邪恶的警长暗中控制的西部荒凉小镇，在黄沙万里的原野上，成了一切罪恶的渊源，镇民们处于淫威之下，敢怒不敢言，一直到有一天，四大汉出现了，四个被逼上梁山的西部好汉，如何在恶势力的笼罩下，重新建立正义和公理。
王亿万背负着父亲寄予厚望的名字，却碌碌无为，胆小懦弱，在接到初恋女友陆小圈的请柬后前往泰国，取钱时竟偶遇丢失银行卡的⼩圈。婚礼前夜，两⼈被⿊哥劫匪团伙持枪困在银⾏中，陷⾝于⼀场真假劫匪的⻛波。
Based on the novel by Karel Capek, the prominent Czech writer of the early 20th century who coined the word robot for his play R.U.R., the story revolves around a discovery of Krakatit - a powerful explosive - by Prokop, an experimental scientist who, following an accidental explosion in his lab, slips in and out of delirium. When he realises that, in a delirious period, he has given the formula for making Krakatit to one of his colleagues, he tries to find the man, who does not realize how dangerous a thing Krakatit is. In the process, he nearly gives his discovery away again to foreign interests, a group of anarchists, and even greater forces of darkness...
