When Dick Grayson was 13, he joined the Young Justice Team. After they betrayed him, he turned his back on the heroes. Three years later, he was recruited by the League of Assassins to protect the young heir to Ra's Al Ghul and Batman, Damian Wayne. What happens when Dick becomes the greatest assassin in the league? Or when Slade destroys Ra's, and Dick has to care for his young brother by himself?