Continue below to view the complete set of loglines for each episode of Legion of Super Heroes. The guide is presented via production order, details provided by Warner Bros. Animation and Kids'WB!, with each episode listing also featuring airdate information.
SEASON ONE
#101 - Man of Tomorrow
Original Airdate - September 23rd, 2006
When fearsome villains the fatal five set their sights on the newly formed Legion of Super Heroes, three of the Legion's members go back in time to get help from the greatest hero of all time: Superman. Instead they find Clark Kent, aware of his powers but not yet of his grand destiny.
#102 - Timber Wolf
Original Airdate - September 30th, 2006
A mysterious scientist asks the Legion to help capture a dangerous creature. They succeed, only to discover the creature is nowhere near as dangerous as the scientist himself.
#103 - Legacy
Original Airdate - October 7th, 2006
Superman unknowingly saves the life of Alexis, one of the wealthiest people in the galaxy. Alexis and Superman become fast friends, but when Superman's Legion responsibilities get in the way of their friendship, Alexis decides to do something about it...
#104 - Fear Factory
Original Airdate - November 18th, 2006
During a cosmic storm, the team takes refuge in a creepy, derelict space station. On board, one-by-one, each Legionnaire faces his or her deepest fear -- and then disappears.
#105 - Champions
Original Airdate - November 11th, 2006
While supporting Lighting Lad as he competes in the challenging Galactic Games, Superman and Phantom Girl uncover a sinister plot by the Fatal Five! Lightning Lad has troubles of his own when he finds his biggest competition from someone close to him.
#106 - Phantoms
Original Airdate - November 4th, 2006
When Superman accidentally opens a gateway to a phantom dimension, a young man with powers identical to his is freed in the process. Now Superman must not only stop this destructive visitor, but also rescue the Legionnaires when they become trapped in the vistor's dimension.
#107 - Child's Play
Original Airdate - February 24th, 2007
A young sorcerer arrives on Earth and causes a heap of trouble. In an effort to send him home, Superman learns of his vulnerability to magic, while Phantom Girl puts her diplomatic skills to the test as she travels to the sorcerer's secretive world to ask for help.
#108 - Lightning Storm
Original Airdate - February 10th, 2007
Much to the Legion's disappointment, Lighting Lad accepts an invitation to join an older, "cooler" team. Once there, however, Lightning Lad realizes these new heroes aren't exactly what they seem. Now, caught between the Legion and his new friends, Lighting Lad must decide once and for all where his loyalties lie.
#109 - Brain Drain
Original Airdate - February 3rd, 2007
A major malfunction sends Brainiac 5's genius IQ plummeting. To obtain the rare element needed to save him, Superman and Timber Wolf must travel to the most inhospitable planet in the galaxy -- and thanks to a transporter accident, they have only Brainy's head to guide them.
#110 - The Substitutes
Original Airdate - February 17th, 2007
It's that time of year again -- Legion Auditions! This year's crop is hardly promising, with most hopefuls turning out to be comic duds. But when the Legion is overwhelmed fighting a mysterious foe in Earth's upper atmosphere, a group of rejects takes it upon themselves to save the world below... with outrageous results.
#111 - Chain of Command
Original Airdate - March 3rd, 2007
When disaster strikes Lightning Lad's home planet of Winath, the Legion is called to help. Lightning Lad's efforts to take charge are thwarted however when long-absent Legion leader Cosmic Boy arrives with an enigmatic new hero in tow.
#112 - Sundown, Part One
Original Airdate - April 28th, 2007
The Legion is put to the ultimate test when an ancient weapon known as a Sun Eater comes to life. The Legion mounts a heroic defense, but the Sun Eater proves too powerful. Now at full strength, the unstoppable Sun Eater sets its sights on Earth...
#113 - Sundown, Part Two
Original Airdate - May 5th, 2007
With the Sun Eater on a direct course for Earth's sun, the Legion has no choice but to ask bitter enemies for help to stop it. Superman meanwhile has his toughest battle yet when he discovers the stealthy alien controlling the sinister machine. In the end, the Legion triumphs... but at a terrible cost.
SEASON TWO
#114 - The Man from the Edge of Tomorrow, Part One
Original Airdate - September 22nd, 2007
In the 41st century, the universe will be terrorized by a warrior named Imperiex. The only person standing in the way of his plans for domination is a clone of the original Superman. But unable to defeat Imperiex and his vast army alone, the clone travels to the 31st century to recruit history’s greatest super hero team, the Legion, to help fight this threat.
#115 - The Man from the Edge of Tomorrow, Part Two
Original Airdate - September 29th, 2007
The Legion has returned from the 41st century with Kell-El, a genetically enhanced Superman clone. But Imperiex, the destroyer of galaxies, has reached the 31st century first -- and unleashed all of the Legion's greatest enemies. To restore order and combat this near-invincible foe, the Legion will once again turn to the past for help in the form of an older, more mature Superman with far greater grasp of his powers.
#116 - Cry Wolf
Original Airdate - October 6th, 2007
After being convicted for a deadly attack on his father, Timber Wolf must escape Legion custody and track down the real assassin, while being both hunted and aided by various teammates. It's up to Chameleon Boy and Phantom Girl to help Timber Wolf clear his name and discover the truth.
#117 - Chained Lightning
Original Airdate - October 13th, 2007
Lightning Lad discovers that his sister, Ayla, long thought to be lost in the same Lightning Beast attack that gave him and his brother, Mekt, their powers, is really alive. However, Ayla is now in the form of pure electromagnetic energy. Lightning Lad must find a way to save Alya before Imperiex can harness this energy for his own diabolical use.
#118 - Karate Kid
Original Airdate - October 27th, 2007
When the dreaded Legion Auditions produce just one potential new member, Nemesis Kid, Superman goes out recruiting, and finds an unlikely candidate to join the Legion. A perpetual underdog, Karate Kid has no super powers, which goes against Legion membership rules, but Superman believes he has the heart to join the Legion. As the Legion hunts down Grimbor the Chainsman, Karate Kid believes he can be an asset, while the others worry he is only putting himself in harm's way.
#119 - Who Am I?
Original Airdate - November 3rd, 2007
In order to infiltrate Imperiex's ranks, the Legion decide to have Chameleon Boy take the form of the villain Persuader. But in order to make the disguise complete, they must also reprogram Chameleon Boy's mind so that he believes that he actually is Persuader. Things go terribly wrong when his Legion teammates are unable to make Chameleon Boy remember who he really is.
#120 - Unnatural Alliances
Original Airdate - November 17th, 2007
When Terra Man, a villain from the future, arrives in the 31st century to hunt down a child, the Legion quickly acts to save the boy and keep him clear of Imperiex's obvious plot. But after Imperiex proves to be the boy's protector, the Legion must uncover why.
#121 - Message in a Bottle
Original Airdate - December 1st, 2007
Superman and the Legion must venture into the legendary bottled city of Kandor in order to stop Imperiex, who seeks an advanced Kryptonian technology believed to be hidden inside.
#122 - In The Beginning
Original Airdate - March 8th, 2008
While on a mission to rescue the Legion's benefactor, R.J. Brande, our heroes find themselves reminiscing about how the Legion was first created by Brande and its founding members: Cosmic Boy, Lightning Lad, and Saturn Girl.
#123 - Trials
Original Airdate - March 15th, 2008
The evil sorcerer Mordru has attacked the magical planet of Zarok, forcing the young and immature wizard Zyx to turn to the Legion for help. While the Legion battles Mordru, Zyx must restore his own powers by passing a series of trials designed to prove his worth as a wizard. He'll have Kell-El along to assist.
#124 - In Your Dreams
Original Airdate - March 22nd, 2008
With the power to see the future in her dreams, Dream Girl warns the Legion of attacks by the criminal organization The Dark Circle aimed to take down the United Planets. However, Lightning Lad wonders if Dream Girl or her visions can be trusted.
#125 - Dark Victory, Part One
Original Airdate - March 29th, 2008
As Imperiex sets in motion one final assault designed to bring him control of the galaxy, Brainiac 5 must fight for control of himself as the ancient programming of Brainiac 1.0 emerges.
#126 - Dark Victory, Part Two
Original Airdate - April 5th, 2008 -- Series Finale!
After eliminating Imperiex, Brainiac 5 takes over his army and plans to conquer the universe. With Superman presumed dead, the other Legionnaires must stop him before it is too late.
