THE DARK KNIGHT™ battles his greatest threats yet: cold-hearted MR. FREEZE™, venomous POISON IVY™ and the unstoppable brute known only as BANE™. BATMAN™ finds himself at odds with his crimefighting comrade ROBIN™, no longer satisfied with his role as a sidekick. As MR. FREEZE™ threatens to unleash a new ice age upon the citizens of GOTHAM CITY™, the DYNAMIC DUO, now joined by the heroic newcomer BATGIRL™, must learn to work as a team before GOTHAM CITY is put on ice.