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Indochina, 1959. A Wild West town controlled by the criminal class: Vietnamese warlords and European war criminals. Den-Dhin-Chan Labor Camp is run by four such dangerous men. The worst prison in the land, it is here that a European, former-champion boxer Martin Tilman (Scott Adkins) has made a name for himself fighting tournaments, on which wealthy criminals gamble in high stakes events. When Tilman is due for release, he just wants to return home, but the corrupt forces running the jail will do everything in their power to keep him locked down. When all that Tilman holds dear is taken away in a vicious act of violence, he is forced to confront the five men responsible and take his revenge.