In the gritty world of underground fighting, an ex-con's quest for redemption becomes a fight for justice. Michael Jai White stars as Isaiah Bone, a martial artist with a score to settle after his friend is murdered in prison. With a promise to fulfill to Angela Soto, Bone infiltrates the fight circuit, taking down opponents with ease and earning him and his promoter a small fortune. But as he faces off against the reigning champion, Bone must confront his own demons and take on the ruthless mob boss James who set up the system that killed his friend, leading to an explosive showdown that will leave only one man standing.