.Just Undisputed.
Undisputed heavyweight boxing champion George "Iceman" Chambers (Rhames) is convicted of rape and sentenced to a new prison in the desert, called Sweetwater. The high-security facility is populated by hardened criminals. Unaware of the prison's ways and its unique hierarchy, the pompous and bratty Chambers tries to impress upon the inmates his status as a champion boxer.
Some years after fighting Monroe "Undisputed" Hutchens in prison, former boxing champion George "Iceman" Chambers visits the Russian Federation for a series of boxing matches, where he is subsequently framed for Possession of drug paraphernalia of cocaine and once again sent to prison. There, he discovers a series of Illegal sports mixed martial arts matches dominated by inmate Yuri Boyka. The prison officials arrange these fights and place large side-bets to make a personal profit, often at the expense of the fighters. Chambers shares a cell with Steven Parker, a British junkie.
Boyka is back. This time he is fighting in the first ever inter-prison tournament with one knee.
Martial artist Yuri Boyka is now a free man and has a manager named Kiril. He still fights in underground matches in Kiev, Ukraine. In a match, Yuri accidentally killed his opponent Viktor. He begins to regret and think about what he was fighting for. He later discovered Viktor has a wife named Alma. Yuri tells Kiril to make a fake passport so he goes to Russia to meet Alma.