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.
Batman, while on patrol in Gotham City, rescues a homeless man who turns out to be the Wizard. Together they embark on a mission to save Shazam from imprisonment by Black Adam. The latter has unleashed the all powerful Djinn Brothers from their imprisonment in the Rock of Eternity.
Superman, Wonder Woman, and Martian Manhunter try to stop the Djinn Calythos who has possessed Parasite and plans to use his scimitar to raise a volcano in Metropolis.
Green Arrow and Batman chase after the Djinn Uthool whom manages to posses Batman and turns him into a bat monster. With Superman to the rescue for Batman, Booster Gold, Wonder Woman, and Cyborg have to prevent a breach in the Hall of Justice's reactor core.
Superman, Batman and Wonder Woman pursue the remaining Djinn Abnegazar, Rath, and Nyorlath. However they manage to drain Superman and Wonder Woman's powers. John Constantine, Green Arrow, Plastic Man and Swamp Thing come to their aid. When the Djinn receive help from Black Adam, Batman arrives with Shazam. Together with the Justice League they defeat Black Adam and the Djinn.
Superman teams up with Space Cabbie and Hawkman to protect Mr. Mind from Lobo.
With most of the League unavailable, Firestorm is the only one to stop a family of androids from blowing up a nuclear power plant.
Batman teams up with John Constantine, Zatanna, and Swamp Thing when Solomon Grundy tries to raise a zombie army.
The Toyman turns the league into players of a computer game and its up to Cyborg to beat Toyman at his own game.
Superman has been infected by the "Repulse" which are advanced nanobots controlled by Lex Luthor. Wonder Woman and Hawkman try to find a way to save Superman and remove the "repulse" nanobots from his body.
A Halloween story. Doctor Fate, John Constatine, Zatanna and Batman are turned into 10 year old childeren by Clarion the Witch Boy. Clarion plans to use this unior league so he can acces the House of Mystery and steal the Helmet of Fate.
After defeating Harley Quinn, Batman and Zatanna encounter Brother Knight, who uses his dark magic on the Batmobile, which turns into a demonized vehicle. Batman, with the help of Etrigan the Demon, must save Zatanna, stop the Batmobile and defeat Brother Knight.
Felix Faust steals Zatanna's hat in order to free a ancient demon and get his youth back. While Etrigan and Batman try to stop the demon, Zatanna has to use every magical spell in her arsenal to get her magical hat back.
Luthor and Circe invade Themyscira, home of the Amazons, to obtain a staff that leads to the Fallen Realm and an artifact of the Greek Gods. Wonder Woman, Batman and Superman, must find a way to stop the villains plan.
Brainiac attacks Metropolis to add the city to his collection. Batman, Cyborg, Vixen and even Superman are unable to stop Brainiac's attack plan, so its up to Plastic Man to safe the day.
Superman takes Firestorm, Star Girl, and Blue Beetle on a tour of his fortress. However in the process Superman is trapped in the Phantom Zone, freeing General Zod in the process. Now the trio of teen superheroes has to stop him.
Lobo is back and he is chased by the Red Lanterns. Atrocitus and his Red Lanterns demand a stolen Red lantern ring back from Lobo, who seeks protection from Batman, Superman, and Wonder Woman. When Lobo's real plan unfolds it takes the combined power of the Red Lanters and the Justice league to stop him.
Mr. Freeze is determined to freeze Gotham City once and for all. And he is using Killer Frost as his power source. While Batman deals with Mr. Freeze its up to Firestorm, who has a crush on Killer Frost, to come to her rescue.
In a Fantastic Voyage-like adventure, Atom shrinks Batman and Wonder Woman, so they can enter Superman's bloodstream and destroy a lethal nanite virus.
The JLA find themselves in danger of losing Wonder Woman when the goddess Athena comes to Earth with an offer Diana can't refuse -- filling the position of the Goddess of Truth on Mt. Olympus.
In order for Batman to lure Deadshot into a trap, he has Plastic Man pose as Two-Face. Things go well at first until the real Two-Face escapes from Firestorm's custody.
While Superman visits the bottled city of Kandor, Brainiac attacks the Fortress of Solitude in hopes of reclaiming the Kryptonian city. With no one else available, The Atom commandeers one of the Superman Robots to fight the super genius.
Swamp Thing has a blind date with Poison Ivy, which leads to her controlling him in her plot to overrun Gotham City with plant. It is up to Batman to find an antidote to free Swamp Thing from Poison Ivy's control. Meanwhile, Poison Ivy is collaborating with Harley Quinn to help her keep Swamp Thing in check. So Superman, Firestorm, and Vixen work to fight Poison Ivy and Harley Quinn on their home turf.
In a strange turn of events, the JLA enlist the help of Space Cabbie and Jonah Hex to stop the hijacking of an intergalactic space train.
Batman teams up with Booster Gold when an interdimensional creature starts literally eating up time.
Space Cabbie inadvertently learns about a great threat to the Justice League when one of his passengers turns out to be Darkseid.
As the Justice League tries to protect the United Nations from Gorilla Grodd gorilla army, Mister Mxyzptlk pops up from the fifth dimension and thinks it would be great fun to put each of the superheroes' brains into another hero's body.
Stargirl has to enlist Constantine's help when Klarion the Witch Boy takes the place of the boy she's supposed to be babysitting.
Green Arrow becomes involved with Booster Gold when he discovers that the self-centered superhero has brought dinosaurs back from the past for a money-making venture.
When the android Amazo attacks and duplicates the abilities and powers of Superman, Wonder Woman, Batman, Flash, Green Lantern, and Martian Manhunter, the strange super-villain Bizarro becomes the Justice League's last hope to turn things around.
Joker springs Lex Luthor from prison with the help of a Mother Box. Its up to the the Justice League to catch them again.
Firestorm attends the opening of the new Science Center established by Martin Stein's old college roommate Mister Terrific until it get crashed by Calculator. When Calculator hacks Mister Terrific's T-spheres and separates Firestorm back into Ronnie Raymond and Martin Stein, it up to Martin Stein and Mister Terrific to work together to free Ronnie Raymond and defeat Calculator.
When obnoxious reporter Sid Sharp decides that Clark Kent is getting all his stories because of his connection to Superman, Sid decides to become his own superhero to out scoop him.
Luthor comes up with a new device to defeat Superman. But the kryptonite emitter has the unexpected ability to separate people in two, one passive and good (blue), the other aggressive and mean (red). Superman Red, Wonder Woman Red and Batman Red decide to use the weapon on the entire Justice League and conquer the world.
Sinestro's ring is suddenly much more powerful than usual, so the Justice League sends a microscopic Atom into his ring to find out what the cause might be.
When Firestorm discovers that League members have no memory of who they are, it's up to him to round them up in their secret identities and convince them they are superheroes.
A mysterious creature abducts Batman, Mr. Terrific, Luthor and two of the brainiest villains in the universe to put them to the test to discover who is the smartest among them.
When the Joker traps Batman, the Justice League allows Riddler to help them find him.
When Gorilla Grodd takes control over Titano, only Harley Quinn can reach him.
When members of the Justice League are affected by the Phantom Zone ray and become phantom-like, their only hope for freedom is to somehow get a message to Booster Gold.
Batman needs help from the new God Mr. Miracle to stop one of Darkseid's evil plans. But Batman first has to catch the universes greatest escape artist.
Trapped in a “pocket dimension” the Justice League has to fight in an endless simulation that Darkseid can reset over and over again. Its up to the Batman to come up with an escape plan and contact the Justice League?