Legion of Super Heroes - Season 2 (2007)

The Legion fight against Imperiex and his new ally Lightning Lord.

When only one applicant makes it through the Legion testing, Superman decides to recruit him as a member: the master of martial arts, Karate Kid.

Chameleon Boy infiltrates Imperiex's ranks. But something goes horribly wrong.

A bounty hunter from the future sets his sights on a small boy. The Legion goes up against him and discovers an unlikely ally

On a mission to the last surviving outpost of Krypton, Superman learns that Brainiac 5's ancestor was the one who took part in the destruction of his homeworld.

While on a mission to rescue the Legion's benefactor, R.J. Brande, the heroes find themselves reminiscing about how the Legion was first created by Brande and its founding members: Cosmic Boy, Lightning Lad and Saturn Girl.

The Legion's nemesis Zyx comes to them for help when the evil sorcerer Mordru takes over his homeworld.

The Legion battle the Dark Circle with the help of Dream Girl, who can predict the enemy's every move before they make it. But when the Dark Circle realize how the Legion is defeating them, they kidnap Dream Girl and put her abilities to use themselves.

The Legion face Imperiex in a final battle. while a traitor lurks in their midst.

After eliminating Imperiex, Brainiac 5 takes over his army and plans to take over the universe. With Superman thought to be dead, the other Legionnaires must stop him before it is too late.