The Super Friends investigate when certain objects disappear and are placed elsewhere. Our heroes are dismayed to discover that a white dwarf is responsible for the disappearances. The culprit behind the white dwarf is Raven, a dangerous scientist from another planet, who values science over human life. Raven has escaped the prison specially designed to hold a genius like himself, and he has a personal vendetta against Superman for putting him there. Raven operates from an artificial island in the sky, and he's been trying to purchase a green stone from the sky from the Martingales, a hillbilly family that refuses to sell it. The stone is none other than Kryptonite, Superman's most deadly weakness. Raven vows to steal a monumental building. Wendy and Marvin wind up in that building while they are on their way to warn the Super Friends. They meet Raven, who makes a deal with Superman to exchange the building for the Kryptonite he wants. Raven then proceeds to put Superman on trial.