Dr. Kirk Langstrom is a genius zoologist attempting to find a cure for deafness by giving humans a bat's sonar sense. By testing his serum on himself he discovers a horrible side effect, turning him into the classic super-villain: Man-Bat!

More feral than ever, the mutated Kirk Langstrom has only one consuming wish--to see his estranged family again. But as a series of brutal murders committed by a winged creature terrorize Gotham's high-rises, S.W.A.T. teams mobilize throughout the city to take down Man-Bat. Gotham's skyline becomes a war zone as the night erupts in a blitzkrieg of bullets, wings and screams, bringing the tortured, increasingly less human Man-Bat into savage conflict with a horrifying new villain, the Roc. But behind the Roc's rampage lie secrets to chill even the blood of Man-Bat...secrets that could cost Langstrom's wife, Francine, her very life.