Scotta Jamesa mučijo nočne more, potem ko je priča umoru svojega najboljšega prijatelja. Kmalu za tem spozna in se priključi kriminalni združbi znani pod imenom Oktagon, ki jo vodi neusmiljeni mafijec. Med iskanjem resnice spozna, da je najverjetneje eden izmed članov skupine tudi morilec njegovega prijatelja. Kako se bo dokopal do resnice?
Scott's life is plagued by two kinds of flashbacks. First are the childhood memories of the rigorous training he and a friend endured under a martial arts master. The second is of a mission Scott went on that ended with him watching his friend get murdered. Scott later becomes drawn closer to a vicious crime ring known as The Octagon. As he gets closer to the truth, Scott learns that these may be the men that murdered his friend so long ago.