"Kid Stuff"

When Mordred banishes all adults into Limbo, Superman, Batman, Wonder Woman and Green Lantern must make a deal with his mother Morgaine to transform into 8-year-olds in a desperate attempt to defeat the boy-wizard.

In an ancient ruin Morgaine le Fay and Modred arrive to procure the Amulet of First Magic. Mordred takes the amulet against Morgaine's wishes and makes a wish to never see her or anyone older then her, ever again. Across the world, everyone older then Mordred begins disappearing. The League are fighting a group of villains when the spell hits, despite Green Lantern's best efforts to protect them. All the adults find themselves floating in limbo – Morgaine meets with the League and warns them there is little she can do against them by herself. She reduces the four Leaguers to the age of children and sends them back to Earth, while Mordred changes an amusement park to a "magic kingdom" more to his liking and commands the children to obey him.

The "junior" Justice League arrive while Mordred quickly grows bored with the demands of his "subjects." The League square off against Mordred and his mystical guardians. Despite their best efforts they are captured and banished to the dungeon to fight a . . . baby Etrigan (aahhhhh...). They manage to defeat him and sneak in to steal the amulet, but Mordred catches on and grows to giant size. Mordred sends dragons against them. They defeat them and make it to Mordred's castle, where Green Lantern causes a distraction with a giant power-ring manga robot while the others try to grab the amulet. Etrigan ends up with the amulet, which he eats, reversing much of Mordred's magic. He still has enough to render them all helpless, but before he can kill them a child intervenes, distracting him enough for the Leaguers to taunt him into breaking his mother's spell and becoming an adult . . . which results in Mordred's own banishment to limbo sans his remaining magic.

The spell is reversed and Morgaine restores the Leaguers, and Mordred becomes an old man (gifted with eternal life but no longer eternal youth) in the care of his mother.