The Shadow World, Book One, Unusual Friendships

Where do old myths and legends go when new religions and beliefs replace them And why do children mysteriously disappear, then reappear with no memory of where they have been The Shadow World, although you will never recall going there, is the answer. When Billy, Kory and Belinda, three elementary school students, find themselves transported there, to remain until they complete a set of tasks, they aren't ready for a world or Norse mythology including dragons, dwarfs, giants and gods who long to return to our world.