There is a Dream World and there is a Sandman and a whole kingdom of tooth fairies. The Dream World almost all falls apart at the hands of Prince Grendelmere, the Prince of Nightmares whoÕs plan is to take control of all the dream knights and break them so his Nightmares can run free and haunt the very children the dream knights protect. Eight year old Penelope Pimm nearly loses her belief in her Teddy Bear, but soon learns the truth of his fate is in her hands one night when Prince GrendelmereÕs Nightmares come to kidnap her dream knight. Penelope bravely follows them into the Dream World and embarks on an unlikely quest to rescue her Teddy Bear and all the other dream knights from a terrifying fate.