A new villain, Gearhead, makes his first appearance robbing a charity race, and Batman soon finds himself forced to upgrade the Batmobile to keep up with the cybernetic bad guy.

When a rare Black Siberian Leopard is stolen, Batman and Batgirl suspect Catwoman and go to protect the second Black Siberian Leopard. But what happens when Joker beats them to the punch and brings the cats to Killgore Steed? It's a maze of doom with dangerous creatures. Can Catwoman, Batman, and Batgirl escape, or will they end up on Joker's wall?