In the early 20th-century, the legendary Joe Hill emigrates with his brother to the United States. However, after a short time, he loses touch with his brother. After a few jobs but struck by all the injustice and tragedy, he becomes active in the forbidden IWW (Industrial Workers of the World), a union for workers without trades. It is forbidden to demonstrate and speak in public but Joe finds a loophole by singing his manifests with the Salvation Army. As his allies grow, so do his enemies.