The villains have broken out of Arkham Asylum and must be stopped! Sound the alarm! The Joker, The Penguin, Poison Ivy and Scarecrow have escaped from Arkham Asylum with the help of Dr. Harleen Quinzel. These villains are about to wreak havoc in the streets of Gotham City! Help Caped Crusaders BatmanTM and Robin swoop into action and put those good-for-nothing criminals back where they belong! Chase after the security van as it breaks through the gothic gates!