Abstract:
Christopher and Molly Jordan discover King Rupert of Endora and his magician Artemas hiding out in an old barn near their house. They had traveled through a magic timedoor and are temporarily trapped in this world, but must return home so the king can rescue his daughter, Princess Rosalind, who was kidnapped by the invading troll and goblin forces of the evil sorcerer Malaban. Though suspecting King Rupert is hiding something, the children help him determine when the timedoor will reopen. But King Rupert and Artemas return to Endora in secret, so Christopher and Molly follow them to get to the bottom of things–and get the adventure of a lifetime instead!