Watch Online Free on Watchseries. Convicted for a crime he did not commit, kickboxer Max Rivers is sentenced to life imprisonment in Carcel de Cordoba, the world's most impenetrable prison. He discovers a corrupt regime run by the chief warden, who organizes high-stake fighting contests. When Rivers' appeal is quashed by a crooked judge, he finds himself forced to rely once again on his fighting instincts as he enters the ring in the prison.