Batman finds himself surrounded in Arkham Asylum by a number of the villains he has since put away there. With superior fighting skills, he manages to hold his own until he winds up launched through an upper window. In the alley below, he prepares to go back inside, but the Joker sneaks up on him. They appear to have made some kind of alliance, and when they get back into the fray, they fight as a team to take down all of the escaped inmates. Batman gets a call from Alfred, and is surprised to discover that the results of the DNA sample he collected are a perfect match with Dick Grayson.