In Sheridan, Wyoming during the Red Scare, two migrant workers--an escaped convict and a union organizer--run into trouble with their boss--a corrupt Western movie star who rapes the ex-convict's girlfriend--that places them back on the run. Trouble stemming from the union organizer's reputation as a so-called dangerous Communist follows them to their next job in Montana. In a tense and fast-paced turn of events, the union organizer sacrifices his life to exact revenge on their former boss and the ex-convict and his girlfriend escape to Canada.