Batman flies into a rage and begins pummeling the Joker. The Joker keeps muttering the word, "Stop", but Batman isn't listening to him. Harley Quinn tries sneaking up behind him with a giant hammer, but Batman sidesteps the blow, and Harley accidentally smashes the Joker's arm with the hammer. Batman gives Harley a kick to the gut to get her out of the way, then continues to beat on the Joker. Images of Barbara Gordon, Jason Todd and Sarah Essen flash through his mind – all victims of the Joker.