Geronimo Stilton gets caught up in the World Karate Championships, thanks to the efforts of Bruce Hyena and Piccolo Tao, Bruce's super-sporty cousin. Geronimo only has a week to become real champion material! Will Geronimo manage to overcome his fears in order to win the competition?
On his way to the Grand Masked Ball and what promises to be a disaster of a date, Geronimo is once again whisked away to the Kingdom of Fantasy, and this time he must save the Princess of the Vanilla Fairies from an evil wizard who is using the pirate ship, Ship of Secrets, to gather magical objects to increase his power and take over the kingdom.
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.
Geronimo Stilton is summoned back to the Kingdom of Fantasy, but he finds Blossom, Queen of the Fairies, surrounded by dark fairies and behaving very coldly--and it is up to Geronimo to figure out just what is going on and find the allies he needs to free Blossom from the evil spell that is affecting her.