Superman has been infected by the "Repulse", who was revealed as Lex Luthor, and has now become the new Repulse. As Wonder Woman and Hawkman try to find a way to save him, Superman must remove those nanobots from his body by sending them into a black hole before he gets pulled into it as well.
The Justice League is back, 'with lightning-paced action and heroics'. This show will be including everyone: Superman. Batman, Wonder Woman, Hawkman, Green Arrow, Zatanna, Shazam, the Flash, Blue Beetle, Plastic man, Martian Manhunter, Lobo, Zatanna, the Demon, Dr. Fate and fan favorites like Harley Quinn and many more. Justice League Action, will also reunite the Batman Animated Series voice talents of Kevin Conroy as the Batman and Mark Hamill as the Joker.