Once upon a time... all your favorite Disney characters lived out their stories in a world of magic. After their happily-ever-afters, they banished all their enemies into the Underworld, ruled by Hades, who was kept in check by Zeus and the Fates. But soon, Hades secretly started a rebellion. The villains, led by Hades, decided to lead a revolt against the heroes. Queen Snow White of the World of Magic summoned all of the heroes into the conflict, which will rage across a span of time.