When a special police task force kick open the doors of elite underground fight den - Club Knuckledust, they find seven levels of hell, filled with the dead bodies of countless fighters, assassins and goons. Only one man, beaten to a pulp, barely breathing, is still alive: Hard Eight. With a shady Government official en route to take him away, Chief Inspector Katherine Keaton and her team have ninety minutes to interrogate Hard Eight to find out if is the lone survivor or a multiple murderer.