Something fishy's afoot at the Arkham Asylum, and Batman is determined to figure out what it is. With the asylum on lockdown, riots ensuing in the streets, and Commissioner Gordon missing, it's up to the Caped Crusader to sort things out. Poison Ivy, Mr. Freeze, and the Joker are all out to take over the city, it seems, and you'll have to help Batman track them down by using Batarangs, Batcuffs, a Batgrapple, some smoke pellets, and a mini-computer. Will this be the end of our noble hero?