Robin, Aqualad, and Kid Flash break into Cadmus and find that it is being run by Genomorphs.

After Speedy declines to join the new team, Robin, Aqualad and Kid Flash fear Young Justice is just a big joke…while new member Miss Martian fears there's no room for her to be part of it. So when the four heroes and Superboy come up against Mister Twister, it looks like all their fears have just been realized…

Superboy's anger over his non-relationship with Superman is getting out of control. He refuses to train with Black Canary, and when the team faces an opponent that even the Justice League had trouble defeating, the Boy of Steel goes rogue.

Green Arrow's niece, Artemis, joins Young Justice and must save a bright young scientist from the League of Shadows.

Superboy and Miss Martian go undercover inside Belle Reve Penitentiary.

When Plant Creatures attack major cities around the world, the team is eager to join the fight alongside the Justice League. Instead, Batman assigns them a still more dangerous task - taking out the plants' masters: a secret society of super- villains: the Injustice League!

When the Justice League is defeated during an alien invasion, the Team has to step up and fill their mentors shoes.

It's Halloween. Artemis and Zatanna are in Manhattan for a girls' night out. There, they encounter the deadly Harm, who has a secret.

The Team takes on the intergalactic bounty hunter Lobo…as a precursor to an alien invasion!

Miss Martian, Superboy, Beast Boy and Adam Strange arrive on the distant planet Rann to stop the alien infiltration of Earth at its source.

After the Justice League faces a horrifying incident on the planet Rann, Dick Grayson gathers an elite squad of heroes to shut down a meta-human trafficking syndicate in Markovia.

Dick Grayson, Artemis Crock, Conner Kent and Jefferson Pierce go undercover in Markovia to stop the Bedlam Syndicate's meta-human trafficking cartel – before it claims another victim

After the Justice League faces a horrifying incident on the planet Rann, Dick Grayson gathers an elite squad of heroes to shut down a meta-human trafficking syndicate in Markovia.

Brion Markov is determined to rescue his missing sister – even if it means throwing down against the entire League of Shadows.

Aliens again threaten the Earth, but with the Justice League split and scattered, only the planet’s first and greatest hero can save the day.