He is Gotham City's hero, it's Dark Knight, its greatest protector. He is Batman. And he not alone. There are two new heroes in town - a pair of masked metahumans with the powers of Superman and a devotion to preserving all that is good about this twisted city. Calling themselves Gotham and Gotham Girl, they've saved Batman's life, fought by his side and learned from his example. But what happens if Gotham's new quardians go bad? What if they blame the Dark Knight for the darkness that threatens to drown their city? When sinister forces are unleashed that can warp the minds of men and make heroes into monsters, the time will come for Batman and his allies to decide once and for all: is Gotham a force for good or an engine of evil?