A 41st century Superman clone, Kell-El, travels to the Legion's time and needs the group's help against the intergalactic menace of Imperiex.

Imperiex begins his conquest of the 31st century by freeing the Legion's greatest enemies from prison. The team must look to Superman in the 21st century for help, and Superman comes to the future only to meet his 41st century clone, Kell-El.

The Legion faces off against Imperiex and his new ally Lightning Lord.

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

A time-traveling 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 how Brainiac 5's ancestor was the one who participated in the destruction of his homeworld.

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