Once again Batman catches the Penguin in the act. Since the fowl felon has a bad habit of escaping his cell the Dark Knight delivers him to a privately run impenetrable prison. But even from behind bars the Penguin finds a way to gain the upper hand. With all the thieves thugs and crooks under his sway the Penguin hatches a plan to unleash his new army on Gotham City. The only shot Batman has at preventing the Penguin's entire army from flying free is to go inside the prison and battle the villain on his own turf.