尚恩迪龙是一位退休的前MMA格斗手,但运气不好。 不但与妻子离了婚,几乎没有照顾他们的7岁小孩的能力,在财力吃紧及种种生活上的困顿,尚恩不得已与组织在线战斗的地下打斗集团联繫。 来自世界各地的参与者可以通过一个加密的密码连接到该网站观看现场战斗并下注。 这份工作能带来的钱庞大到难以拒绝,尚恩将自己能从谷底翻身的希望全都寄与此,期望这个机会能改善他的一落千丈的自尊心以及乱七八糟的生活。 他不知道的是….地下打斗集团的风俗— 只有获胜者才能存活。Sean "THE KILLIN'" Dillon was on top of the world. Having become a decorated MMA champion, young Father and husband to a beautiful wife, the now retired fighter has hit the bottom. Having squandered his savings, suffered the loss of family through divorce, and perhaps worst of all, his self-respect. Although Sherry still loves Sean, she still believes that she and their son Mikey, are better off without him. Working at her Father's bar, she makes due. It's a hard, and difficult life, but at least she's happy. Sean is still around, a frequent patron, but not much exists between them now. One night at the bar, Sean starts a brawl, causing damage to the bar and hospitalizing the other patrons. Jake, a local detective and a close friend, arrives on the scene and threatens to arrest Sean unless he promises to turn his life around. A witness to the brawl, Deke, a recruiter for the Blood Circus, (a mysterious and brutal fight club), approaches Sean with an offer; to join the club in which ...