A challenge bout is coordinated by an aging mobster prisoner (Peter Falk) and the head guard (Michael Rocker), and Undisputed pummels its way to its brutal and unpredictable conclusion.

• 他要面临的不只是保护自己不受伤害，更要面对监狱里的“拳击冠军”蒙罗（韦斯利辛纳斯）的挑战，在这里展开一场特殊的“拳王争霸赛”。