Young Justice Season 1 Episodes Info

Young Justice Season 1 consists of 26 episodes . It originally aired on Cartoon Network starting in late 2010 and following through 2012, introducing a covert operations team of teenage sidekicks who work for the Justice League. Season 1 Episode List

The season is often divided into several "Volumes" for home video releases: Young Justice Wiki

Young Justice: Season 1 – Episode Guide

Investigation, infiltration, and adolescent angst collide as the Team—Robin, Aqualad, Kid Flash, Superboy, Miss Martian, and Artemis—prove themselves as covert operatives.

Episode 1: "Independence Day" (Original Air Date: November 26, 2010)
Logline: On July 4th, Robin, Aqualad, Kid Flash, and Speedy break into Cadmus Labs to uncover cloning secrets—only to find Superboy and face a deadly Genomorph attack.

Episode 2: "Fireworks" (Original Air Date: November 26, 2010)
Logline: The newly formed Team races to stop the original Red Tornado from detonating a bomb that would expose all super-powered teens to the public.

Episode 3: "Welcome to Happy Harbor" (Original Air Date: December 3, 2010)
Logline: Miss Martian joins the Team as they investigate a series of robberies tied to the villainous Mister Twister, forcing the young heroes to learn real teamwork.

Episode 4: "Drop-Zone" (Original Air Date: December 10, 2010)
Logline: The Team goes on a covert mission to stop the drug trade in Santa Prisca, facing off against Bane and the mind-controlling Kobra-Venom.

Episode 5: "Schooled" (Original Air Date: December 17, 2010)
Logline: Superboy must overcome his rage issues when a new, cybernetic Atomic Skull attacks a high school—and the Justice League is unavailable. young justice season 1 episodes

Episode 6: "Infiltrator" (Original Air Date: January 14, 2011)
Logline: Artemis is sent on her first official mission: protect a scientist from Cheshire, unaware that the assassin has a personal connection to her family.

Episode 7: "Denial" (Original Air Date: January 21, 2011)
Logline: Wally (Kid Flash) refuses to believe in magic—until the Team tracks the mystical artifact known as the Star of Atlantis, with help from Doctor Fate.

Episode 8: "Downtime" (Original Air Date: January 28, 2011)
Logline: Aqualad returns to Atlantis for a family emergency, but a terrorist attack led by Black Manta forces him to choose between his king and his new Team.

Episode 9: "Bereft" (Original Air Date: February 4, 2011)
Logline: Waking up on a Martian battlefield with no memories of the past six months, the Team must piece together their mission while fighting Psimon’s psychic assaults.

Episode 10: "Targets" (Original Air Date: February 11, 2011)
Logline: Red Arrow (formerly Speedy) races to stop a series of assassinations at a peace summit, while Robin and Artemis track the assassin Red Torpedo.

Episode 11: "Terrors" (Original Air Date: February 18, 2011)
Logline: Superboy and Miss Martian go undercover as captured villains inside Belle Reve Penitentiary to uncover a prison-wide conspiracy led by the Riddler.

Episode 12: "Homefront" (Original Air Date: March 4, 2011)
Logline: Robin and Artemis must defend the Mount Justice headquarters alone when Red Tornado’s “siblings” (Red Inferno and Red Torpedo) turn the base into a deadly trap.

Episode 13: "Alpha Male" (Original Air Date: March 11, 2011)
Logline: The Team encounters a primitive tribe of super-powered “Wolf” creatures in Bialya, forcing Miss Martian to confront her telepathic limits. Young Justice Season 1 consists of 26 episodes

Episode 14: "Revelation" (Original Air Date: March 18, 2011)
Logline: The Injustice League unleashes plant monsters across the globe; the Team must work with the Justice League to stop them—but the real threat is still hidden.

Episode 15: "Humanity" (Original Air Date: April 8, 2011)
Logline: Red Tornado is deactivated by the villainous T.O. Morrow; the Team journeys into his cybernetic mind to save him and uncover his secret desire to be human.

Episode 16: "Failsafe" (Original Air Date: April 15, 2011)
Logline: A training simulation turns into a nightmare when an alien invasion kills the Justice League, forcing the Team to lead Earth’s last stand—but is any of it real?

Episode 17: "Disordered" (Original Air Date: April 22, 2011)
Logline: Traumatized by their simulated deaths, the Team faces their fears with help from Black Canary, while a new threat emerges in the form of the psychic parasite.

Episode 18: "Secrets" (Original Air Date: April 29, 2011)
Logline: On Halloween, Artemis and Zatanna (guest-starring as a young apprentice magician) must stop the ghostly villain Harm from sacrificing a teenager.

Episode 19: "Misplaced" (Original Air Date: May 6, 2011)
Logline: Every adult on Earth vanishes into a parallel dimension; the Team—the only heroes left—must fight Klarion the Witch Boy and his fellow sorcerers.

Episode 20: "Coldhearted" (Original Air Date: May 13, 2011)
Logline: Kid Flash must deliver a life-saving heart transplant across the country in under four hours, battling Count Vertigo and his own selfish impulses.

Episode 21: "Image" (Original Air Date: May 20, 2011)
Logline: Miss Martian faces her deepest secret when the Team rescues her “aunt” from the villainous Queen Bee—only to discover a shocking truth about Martian society. Young Justice: Season 1 – Episode Guide Investigation,

Episode 22: "Agendas" (Original Air Date: May 27, 2011)
Logline: The Justice League debates adding new members; meanwhile, Superboy uncovers a secret Cadmus lab containing a clone of himself—with deadly potential.

Episode 23: "Insecurity" (Original Air Date: June 3, 2011)
Logline: Artemis’s past comes crashing back when Sportsmaster hires Red Arrow to hunt her; the Team must decide if she’s a hero or a spy.

Episode 24: "Performance" (Original Air Date: June 10, 2011)
Logline: The Team goes undercover in a circus to catch the thief known as the Manticore—where Robin must confront his own family’s acrobatic history.

Episode 25: "Usual Suspects" (Original Air Date: June 17, 2011)
Logline: After months of secrets, the Team is summoned to the Hall of Justice for a “trust evaluation”—just as the villains make their final move.

Episode 26: "Auld Acquaintance" (Original Air Date: June 17, 2011)
Logline: The Team discovers that the entire season’s conflicts were orchestrated by the Light. In a desperate final battle, the young heroes must break free from mind control and save the Justice League.

Season 1 Total Episodes: 26

Episode 1: "Independence Day" (aka "Sidekicks Assemble")

• Original Airdate: November 26, 2010 (Part 1)
• Summary: Robin (Dick Grayson), Aqualad (Kaldur'ahm), Kid Flash (Wally West), and Speedy (Roy Harper) break into the Hall of Justice to join the Justice League. When Speedy storms off to find his missing mentor (Green Arrow), the remaining three are recruited by Batman, Aquaman, and Flash for a secret mission to Project Cadmus.
• Key Moments: The team discovers Superboy (Conner Kent) in a pod. They also find a "Genomorph" city beneath Metropolis. Speedy quits, setting up the season’s central mystery.
• Verdict: A perfect cold open.

How the Season is Structured

Unlike seasonal arcs that reset every 22 minutes, Young Justice is a continuous narrative. The season is divided into several key arcs:

• The Introduction (Episodes 1-4): Team formation and initial conflict with the "Light."
• The Mole Arc (Episodes 5-13): Paranoia as the team suspects a traitor in their midst.
• The Summit & Fall (Episodes 14-22): The team matures while the villains consolidate power.
• The Final Gambit (Episodes 23-26): A shocking betrayal and a planet-wide conspiracy.

Episode 17: "Disordered"

• Original Airdate: March 25, 2011
• Summary: The direct aftermath of "Failsafe." The team sees Black Canary (the team therapist). They fight a psychic manifestation called "Red Volcano" again, but the real battle is their own fear.
• Key Moments: Superboy finally confronts his anger in a healthy way. Miss Martian has a breakdown over her telepathy.
• Real Talk: An episode about teen mental health in a cartoon. Incredible.

Episode 26: "Auld Acquaintance"

• Original Airdate: June 10, 2011
• Summary: The Season 1 finale. The Light uses the "Starro-tech" to mind-control the entire Justice League. Batman, Superman, Wonder Woman, and the rest attack Mount Justice. The Team must fight their mentors to save the world.
• Resolution: Aqualad survives. The team destroys the Starro spores. Red Arrow is freed from his programming loop. The Light's leaders escape through a Zeta-Tube.
• Final Scene: The six founders of the Justice League (Superman, Batman, Wonder Woman, Flash, Green Lantern, Aquaman) stand in the cave. They resign as mentors, leaving the fate of Earth to the Young Justice team. They salute.
• Post-Credit: A pod labeled "Roy Harper" sits on a shelf. The real Roy is still missing. The Light's true goal (the "War World") is revealed. Season 2 begins.

Part 2: The Light Revealed (Episodes 3–12)

The early season focuses on team bonding and individual missions, but a pattern emerges: a secret organization called The Light is manipulating global events.

• The Enemy Within: The Team battles a range of foes, from the villainous cult Kobra to the assassin Sportsmaster. They realize these are not random attacks; The Light is testing them.
• Secrets: We learn that Artemis is the daughter of Sportsmaster, hiding a villainous lineage. Red Tornado, the team's supervisor, is revealed to be a mole (unwittingly) feeding information to The Light.
• Justice League Traitors: In a pivotal arc ("Alpha Male"), the Team discovers that The Light has placed chips on the Justice League members, controlling them. The Team fights their mentors (Superman, Batman, etc.) and frees them, earning the League's full respect.

During this time, the Team realizes The Light is led by a council of major villains, with Vandal Savage and Lex Luthor at the forefront. Their goal is not just crime, but the advancement of humanity—by any means necessary, including wiping out the "interference" of the young heroes.

Episode 5: "Schooled"

• Original Airdate: December 17, 2010
• Summary: Superboy struggles with his rage issues when he is left behind due to a mission involving the terrigen-mutated monster, the Parasite. When the League struggles to beat the creature, Superboy steps up.
• Key Moments: Superman finally visits the cave. It's awkward. Superboy learns that rage isn't strength—control is.
• Quote: "I don't want to be the weapon... I want to be the hero."