On a snowy day, Mouse is swept outside where he plays in the snow, ice skates on a frozen puddle, and makes sure his friends the birds get something to eat.

When he and his friends discover a huge clam containing a giant and extremely rare pearl, Geronimo Stilton writes an article about the finding in the Rodent's Gazette and attracts the attention of would-be pearl thieves.

A confident but inexperienced cat believes that because she has never seen a mouse she has scared them all away, while unaware that an intrepid little mouse is hiding on every page.

While the library that Sam and his adventurous friend Sarah live in is being renovated, the two mice try to make new homes for themselves in the attic, constructing everything from a yurt to a geodesic dome. Includes photographs of real house styles discussed and a brief glossary of terms.

A small, but plucky mouse named Mike is sure that he can help the Space Shuttle astronauts, and ends up saving the whole mission.

Motor Mouse takes a hot air balloon ride with his brother Valentino and neighbor Horatio, decides to teach Valentino to drive a car, and spends a day with Valentino at the Funfair.

When Grandfather William informs him that the Rodent Gazette is out of money, Geromino is forced to sell his house in order to keep the paper afloat.

"When an ordinary spot on a grassy hill calls out to him, mouse Vincent, who moves his house on his back, opens his doors to hungry and tired travelers who pass by, welcoming them into his home and making room for everyone"-- Provided by publisher.

Sam the library mouse and his friend Sarah leave the library and go to a museum so that Sam can make sketches in his explorer's journal, and while there, they see different kinds of artwork and make friends with another artist.

Trap and Geronimo team up in an attempt to win a race to Boulder Bay and back, a race that supplies the village cheese maker with rare hot lava peppers, and comes with a large cash prize.