Watch Nightwing: The Series Episode 1 HD Full Free on SolarMovie. Watch Nightwing: The Series tv series online free. When his girlfriend is supposedly shot and killed, Dick Grayson quits as Robin and goes off to fight...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.