A girl who was trained by the League of Assassins and a boy trained by the legendary Batman. When a girl by the name 'Nightingale' shows up in Gotham, Batman is suspicious. The Joker comes out of hiding the day that Nightingale stops her first mugging in Gotham. Can the Batfamily afford to think that's it's a coincidence? Nightwing finds himself at odds when everyone around him is so quick to trust the mysterious Nightingale. Dick Grayson eventually let's his guard down, but as he gets to know her, he finds more and more secrets. For Athena Thomas, life has always been hard. So, when the opportunity to get revenge for her family's murder presents itself, she takes it without knowing the consequences. Nothing matters but the mission. Athena was always taught to put business over emotion. Even when she meets someone who might finally be able to give her redemption...Can she really let her past go, or will she be forced to hurt her new family?