The Legion of Doom makes a deal with a swamp sorceress and her demon: an equal exchange of good and evil power. They capture the Super Friends as the source of good and put them to sleep in coffins. Greedy for more power, the Legion imprisons the demon, who escapes and summons zombies to attack. Forced to free the heroes, the sorceress advises defeating the zombies, but then reveals she and the demon are the same being, balancing the power herself.