Set against the backdrop of a violent gang war, the police commissioner must find who is killing young children before the next innocent victim dies.

Alan Clay, a struggling American businessman, travels to Saudi Arabia to sell a new technology to the King, only to be challenged by endless Middle Eastern bureaucracy, a perpetually absent monarch, and a suspicious growth on his back.

Russian inmate Boyka, now severely hobbled by the knee injury suffered at the end of Undisputed 2. No longer the feared prison fighter he was, he has declined so far that he is now good only for cleaning toilets. But when a new prison fight tournament begins – an international affair, matching the best fighters from prisons around the globe, enticing them with the promise of freedom for the winner – Boyka must reclaim his dignity and fight for his position in the tournament.