For the seventh time Geronimo Stilton finds himself in the Kingdom of Fantasy--this time Blossom, Queen of the Fairies, needs him to find the seven enchanted charms before the evil Wizard of the Black Pearl can get to them.

The enchanted Winged Ring which Queen Blossom gave to Geronimo is missing, apparently stolen by the dark fairy Wither and her dark crow allies, and whoever possesses it gains enormous power and can travel between the Kingdom of Fantasy and the real world--now nightmares are starting to affect Mouse Island, the entire Kingdom is furious with Geronimo, and it is up to one mouse to set things straight and recover the ring.

Blossom, Queen of the Fairies, has disappeared, along with three powerful magical objects, the Book of a Thousand Spells, the Crystal Sphere, and the Whispering Wand, and Geronimo Stilton is once again called on to confront an evil wizard, rescue the Queen, recover the objects, and save the entire Kingdom of Fantasy.

Geronimo is in the Kingdom of Fantasy for training on the "Balanced Path" when he learns that Queen Blossom has had a beautiful baby girl, Winglet, and that the baby princess has been kidnapped--and it is up to the brave mouse as Guardian of the Realm to discover who has taken Winglet, and return her to her distraught parents.