Heavyweight boxing champion George "Iceman" Chambers (Michael Jai White) is wrongfully framed for drug possession by Russian mobsters. Sentenced to the brutal "Katorga" prison in Russia, he is forced to fight for the amusement of the warden. However, the prison’s true champion is the terrifying, religiously devout, and technically flawless fighter named Yuri Boyka (Scott Adkins), who proclaims himself "the most complete fighter in the world."