The story of a young American lad called Stanley who attends a small primary school in an English village. One day Stanley and his friends discover that their Teachers have been possessed by Aliens. With the help of the school caretaker who also happens to be one of the foremost Elvis impersonators in the world, the group attempt to see off the aliens and rescue the pupils that have been selected to be taken to the alien planet. All is going well until Stanley, Elvis and Lily end up trapped on one of the spaceships heading far out into space. They arrive on the alien planet and discover that the aliens are being lorded over by a mad American scientist with an obsession for all things medieval and they discover that he has been recreating the fairytale castles of King Ludweig II of Bavaria. It is then a battle for the intrepid group to rescue the already abducted children and escape back to Earth.