AllMovie

Eight incarcerated brawlers compete for their freedom in an underground fight to the death funded by a powerful underground gambling ring. The further Boyka (Scott Adkins) works his way up through the ranks, the more powerful his opponents become. Upon realizing that his mysterious benefactors have no intentions of letting the winner reap their reward, Boyka launches into a fierce battle to bring the crooked syndicate crumbling to the ground, and expose their inhumanity in the process.