Season 1
When his girlfriend is supposedly shot and killed, Dick Grayson quits as Robin and goes off to fight crime as Nightwing. While doing so he comes into the path of Deathstroke and has to defeat him before he kills again.
Episodes
When his girlfriend is supposedly shot and killed, Dick Grayson quits as Robin and goes off to fight crime as Nightwing. While doing so he comes into the path of Deathstroke and has to defeat him before he kills again.