Batman teleports himself to the Hall Of Justice and talks with the Justice League about Joker delivering Kryptonite to Lex Luthor at the docks. Also, Joker has Batman's dead bodies of his parents strapped to the car. Superman throws Aquaman into Luthor's boat, which sinks. The rest of the League arrives, with Joker throwing Kryptonite at them. He hits each Justice League member (except for Superman) and Batman has Flash remove his dead parents. Flash then shouts, "Now let's fuck him (Joker) up." Every League member beats the crap out of Joker and Luthor emerges from the water. Aquaman summons his sharks to attack Luthor, only to get beat up by Luthor. Aquaman dives into save the sharks but Luthor starts drowning him.
Batman returns to the Cave, where he finally admits Robin can be useful at times. Robin thanks Batman and reveals that Star Sapphire tried to give him a hand job, but he told her no way.
After the credits, Green Lantern asks Flash where Batman is. But Superman explodes after falling onto some Kryptonite, while Wonder Woman slowly says, "Gross."