"Ding ding ding! The fight of the century is on! In one corner, Justice Society of America member Wildcat, the greatest bare-knuckle scrapper on the planet. In the other corner, the Dark Knight Detective, Batman! Who will win as two of the greatest fighters go toe to toe? It'll take more than muscle if these two heroes want to try and shut down a secret superhuman fighting ring that's killing their combatants! That is, unless these two kill each other...