The Joker has poisoned Ric Grayson s mind with false memories and pitted him against Batgirl, the Robins, and Batman. As Batgirl realizes the key to ending this nightmare is through the crystal around The Joker s neck, it s up to Grayson to use it on himself and fight for who he really is: Nightwing! And if he doesn t get stuck in his own memories, will he be able to rescue the Bat-Family from The Joker s plans and end this cruel joke once and for all?