Robin must defend precious resources from the threat of Mr. Freeze! Exhausted after his battle with Ratcatcher, a weakened Robin joins forces with the subterranean clan of kids known as the Wolflings to take on Batman's most chilling foe!

Mr. Freeze has frozen and interrogated Gearhead and Tommy Mangles for information on a food and medial storehouse hidden below Gotham. Along the way he enlists the aid of The Ratcatcher who was in pursuit of Robin.

Meanwhile, Robin is in search of the same supplies aided by a group of Tim's schoolmates, who have formed a tribe of survivors called the Wolflings based off a popular RPG. Robin is also suffering from hallucinations from an infection he received during a fight with The Ratcatcher's rats.

Robin rescues his friends from Mr. Freeze and The Ratcatcher upon discovery of the storehouse. The GPCD collect Freeze, Ratcatcher, Gearhead, and Mangles.