In the premiere episode, Robin, Speedy, Aqualad and Kid Flash are finally granted access to the headquarters of the Justice League. But when that access turns out to be little more than a glorified backstage pass, Speedy walks, and the other three go on a mission of their own - to Project Cadmus - where they make a startling discovery….
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In the premiere episode, Robin, Speedy, Aqualad and Kid Flash are finally granted access to the headquarters of the Justice League. But when that access turns out to be little more than a glorified backstage pass, Speedy walks, and the other three go on a mission of their own - to Project Cadmus - where they make a startling discovery.
After Speedy declines to join the new team, Dick Grayson, Kaldur'ahm and Wally West fear Young Justice is just a big joke - and new member M'gann M'orzz 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...
On their first official assignment - a covert recon mission to the venom-producing island of Santa Prisca - the team finds itself caught in a struggle between the deadly Bane and cult leader Kobra for possession of something far worse than they suspected. Can Robin lead the team to victory? Can Robin lead the team at all?
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.
Artemis faces an uphill battle trying to win over her new teammates as she tries to fill Red Arrow's boots on a mission he initiated: saving a brilliant young scientist from the League of Shadows.
When the team investigates the disappearance of Kent Nelson (formerly Doctor Fate), the scientific-minded Wally West is forced to confront his disbelief in magic while battling Abra Kadabra and Klarion the Witch Boy for the ultra-powerful helmet of fate.
After a disastrous mission with the team, Aqualad returns to Atlantis to choose between a life on the surface world or one beneath the waves with the Aquagirl of his dreams. But other forces are at play, which may make Aqualad's decision for him.
The team finds itself wandering the desert of Bialya with no memory of the last six months - or of each other. Only Miss Martian can restore their minds and figure out what happened.
Red Arrow's battle to prevent the League of Shadows from inciting a war pits him against the world's most dangerous assassins - and allies him with someone more dangerous still. Too bad Aqualad couldn't convince him to ask the Team for help…
Batman assigns Superboy and Miss Martian to go undercover inside Belle Reve Penitentiary, a federal prison designed to house the world's worst super-villains.
When the cave itself is attacked, can Artemis and Robin - the two teens without super powers - save the team (or even themselves) from the unknown invaders?
Already exhausted and rattled after a home turf invasion of the cave, the team learns that Aqualad - their friend and leader - withheld vital information that put them all at risk. When Batman sends the team and new "den mother" Captain Marvel to India to investigate bizarre reports of armed animals attacking human beings, can Aqualad pull his fractured team together?
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 called the Injustice League!
The team is on the hunt for Red Tornado, determined to find out once and for all whether the robot was the mole - even if it means kidnapping new friend Zatanna and dragging her along on their quest!
During an alien invasion, the team faces the ultimate challenge when they are forced to replace the fallen Justice League!
Conner Kent's pet, Sphere, has undergone a startling transformation, bringing it to the attention of the Forever People of New Genesis. Turns out Sphere originally belonged to them and they want Sphere back!
On Halloween, Artemis and Zatanna go to Manhattan for a night on the town, only to be hunted by Harm, a psycho in training who is hiding a deadly secret.
When every adult on the planet disappears, only the team, Zatanna and Billy Batson are left to defeat the five most powerful sorcerers on Earth.
Wally West comes oh-so-close to fulfilling his birthday wish to finally fight alongside the Justice League. Instead, a massively disappointed Kid Flash is taken off the mission and tasked with a simple delivery job. But a few deadly surprises await the birthday boy along the way...
A covert operation against Queen Bee in Qurac forces Miss Martian to finally face her greatest fears and her biggest secrets. But will she reveal those secrets to her friends - or allow what she's hiding to take down the entire team?
Superboy returns to Project Cadmus, where he learns the top-secret genetics lab may have created another Super Clone.
Red Arrow's return undercuts Artemis's confidence, while the team's mission to track down Sportsmaster threatens to expose her darkest secrets…
The team goes undercover at the Haly International Traveling Circus to locate a thief stealing weapons technology across Europe - but a thief isn't all they find.
The team gets a new member and a new mission - a mission that may finally expose all of the team's secrets and all of their lies!
The team finally learns the identity of the traitor in their midst, forcing a battle against an enemy more dangerous than any they've ever faced before!