Batman, Detective Comics: A lonely place of living

"Follow the adventures of Batman, the world's greatest ... teacher?! The Dark Knight and series co-star Batwoman team up to take new proteges Red Robin, Spoiler and the villainous Clayface under their leathery wings! The only problem is, neither new super-instructor knows exactly what they're in for as the attempt to train these would-be heroes before a mysterious army takes Gotham for themselves."--