After the shooting of Barbara Gordon by Deathstroke, Dick Grayson goes on his own as Nightwing, and assembles a team of teenage superheroes (Beast Boy, Raven, Cyborg, and eventually Starfire) to find and kill the mercenary. While dealing with his own traumas over the event, Grayson and the Titans are led on a mission that pits them against Deathstroke and his League of Assassins. Eventually, they discover that the criminal underworld is more complex than believed, and the League is just a front for an even more sinister cult, led by Brother Blood.
