Firefly and Mr. Freeze make an unlikely pair as they join forces to plunge Gotham into a permanent winter. With the entire police force "iced over," The Batman is the city's only hope for survival.
Firefly and Mr. Freeze team up to put their devastating plan into action: permanently putting Gotham City in a never-ending winter. Once the policeman's gala charity ball is put on ice, it's all up to the Batman.