Batman and his sidekicks, Robin and Batgirl, are in New York City - home to the Teenage Mutant Ninja Turtles. Has the world gone mad? Not yet. But the evil Mad Hatter plans to change that! Batman and the Ninja Turtles must stop this villain before he gains mental control of the entire city. Along with high-impact art, these fast-paced stories are sure to leave fanboys and fangirls alike SHELL SHOCKED! Part of the Batman / Teenage Mutant Ninja Turtles Adventures series.