Geronimo Stilton teams up with Hercule Poirat to determine the identity of the thief who has stolen all the pumpkins in New Mouse City just days before Halloween.
Journalist mouse Geronimo Stilton travels to New York to spend the Christmas holidays with his family and finds himself scurrying all over the Big Apple searching for his luggage, which has gotten mixed up with another mouse's.
When Geronimo agrees to be a caddie for his grandfather in a golf tournament, he and Special Agent OOK team up to prevent the theft of the Super Mouse Cup.
Geronimo Stilton receives a crystal figurine of a boat as a gift from his crush Petunia Pretty Paws, and when he discovers a mysterious message inside the gift asking for help in Italy, he immediately travels to Venice to save the day.
Geronimo Stilton and his family travel to Penny Pincher Castle to visit his uncle, Samuel S. Stingysnout, and tries to uncover who, or what, is behind the creepy occurrences that have been taking place at the castle.
After receiving a mysterious message summoning him to a meeting, Geronimo Stilton finds himself back in the Kingdom of Fantasy, summoned by the Elves, who want him to travel to the Great Explanatorium to find an answer to the earthquakes that are threatening the Kingdom.