Muskrat City's worst criminal, Blacky Bon Bon, suddenly has superpowers, just like the superheroes! Supersquitt must find out how this has happened, and how to make everything right again. "Una amenaza sin precedentes se cierne sobre Muskrat city y lleva la firma de black Bon Bon, el enemigo número uno de los Superhéroes que, de la noche a la mañana, exhibe unos poderes sorprendentes. Los Superhéroes tratarán de desbaratar los planes de conquista...

Geronimo Stilton regrets that he is too busy to celebrate Christmas in New Mouse City and wishes he could fly to Santa's toy factory.

Geronimo Stilton meets outer space in this cosmically fun spin-off series! Geronimo Stiltonix and his crew head to the planet Jurassix to warn its inhabitants of a giant comet heading straight toward them! But the creatures there turn out to be ferocious, dinosaur-like beasts ... who like to eat rodents. Squeak! Can the spacemice save these aliens and still make it out alive?

When Geronimo travels to New York City for Christmas, he accidentally switches luggage with another passenger, so he travels all over the city searching for the bag's owner and his own bag, which contains his Christmas presents.

A visit to a mysterious clock store leads Geronimo Stilton back to the Kingdom of Fantasy which is facing a crisis: something is making the magical timepiece that measures out the life of Blossom, Queen of the Fairies, run fast so she is aging at an alarming rate--and if she dies, so does the Kingdom.

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.

When Geronimo Stilton and his friends time travel to three different centuries seeking artifacts missing from the mouseum, they meet Alexander the Great, Queen Cleopatra, Francis Drake, and Mozart.

"Rancid rat hairs, the cat pirates are coming to town! They're planning on stealing New Mouse City's Statue of Liberty and taking it back to Cat Island. They think it's completely made of gold! My friends and I are determined to protect our city's precious symbol. But can we stop these fearsome felines?"--Page [4] of cover.

When pirate cats threaten Mouse Island, Professor von Volt sends Geronimo Stilton and his friends back through time to ancient Greece, Atlantis, and Stonehenge to try and find out how ancient civilizations were able to find peace and avoid war--only to find that the key to peace was under their whiskers the whole time.