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.

Geronimo Stilton is invited to a rat-jitsu martial arts championship in a snowy faraway land, much to the famouse reporter's surprise. With his helpful relatives, Thea, Trap and Benjamin, Geronimo goes to cover the event for the Rodent's Gazette. But something strange is happening. After each championship match, the winner disappears without a trace! Will Geronimo get involved and solve the mystery of the missing martial artists? Or will he be consumed...

Watch your whiskers, Stilton: A mysterious one-eyed rat is trying to steal The Rodent's Gazette from under my nose! My manager came up with a plan to stop him. He arranged for me to appear on a TV quiz show. But if I lose I have to give up my tail! Shipwreck on the Pirate Islands: My sister, Thea, comes up with a new way to torment me. She's combined my two least favorite things: travel and ghosts! She heard rumors of a haunted pirate treasure buried...

"The phantom of the subway: When my sister Thea told me a ghost was haunting New Mouse City's subway tunnels, I had to get the scoop! So I set off with Thea, Trap, and my assistant editor Pinky Pick. But we were all in for the fright of our wee mouse lives...because the ghost turned out to be a CAT! The temple of the ruby of fire: It was my most thrilling adventure yet! My old friend Professor von Volt had discovered the location of the famous Ruby...

"I invited my friend Petunia Pretty Paws to visit the Bay of Whales with me. But our trip got off on the wrong paw, and my relaxing vacation turned into a real nightmare. That is, until Petunia and I came across a great white whale that needed our help" (publisher).