Batman's son Damian defies his father's orders to remain in the Batcave and investigates Alfred's kidnapping. The investigation leads to Gotham Zoo where Damian is captured by Joker. Joker accuses Damian and the other members of Batman's family of being a burden that holds Batman back and prevents him from being the best foe for Joker. Joker tells Damian that his and Batman's greatest fear is being responsible for the others death. Joker then presents Damian with Batman in Joker makeup, and states that Damian must kill Batman before Batman kills him. Unwilling to kill his father, Damian chooses death, but the Joker kills Batman before he can deal a fatal blow. Damian passes out from Joker toxin and the Batman is revealed to be a fake.