When they receive a damaged message in a bottle from the Oofa Oofa rodents in the ancient far north, Geronimo Stiltonord and the micekings set sail to Oofadale but are attacked by a band of dragons while on their voyage.

Geronimo joins the effort to rescue Blossom, Queen of the Fairies, who has been kidnapped by the Queen of the Witches and taken to the Kingdom of Nightmares.

When Professor Cheesewheel automates Geronimo's house to help him keep it clean, Geronimo soon finds his futuristic home going haywire.

Geronimo Stilton's ancient ancestor Geronimo Stiltonoot is back in another prehistoric adventure. Geronimo Stiltonoot and his family are off to find a cure for Grandma Ratrock's aches and pains. She's heard that a remedy hides in a legendary valley, and Geronimo isn't even sure it exists. Little does he know that getting there will be an adventure among geysers, volcanoes, and rivers of molten lava.

When Geronimo's fears overtake him, Thea and Trap turn to survivalist Penelope Poisonfur, who leads the "fraidy mouse into Ratytrap Jungle where he has to eat ant soup, swing on vines across raging rivers, and wrestle snakes.

Geronimo Stiltonoot and his family save a young dinosaur from the river. The dinosaur and Benjamin quickly become good friends, but the dino turns out to have a tremendous talent for mischief. Can Geronimo get him back to his herd before he causes a megalithic disaster?

Geronimo Stiltonord has trouble selecting a winner as the judge of the Shield Mouselet Mega Challenge, and while everyone is distracted by the competition, the dragons launch a surprise attack.

The discovery of an old map by his sister Thea leads Geronimo and his family to search for buried treasure on a faraway island.

When their cousin is stung by a cavefly and falls into a deep sleep, Geronimo and Thea set out in search of the rare pink stinkrose, whose petals are thought to provide a cure.

It was my most thrilling adventure yet! My old friend Professor von Volt had discovered the location of the famous Ruby of Fire. And before I could let out a squeak of protest, my sister Thea had dragged me into race to be the first to find the legendary gem. The jewel was protected by thousands of ancient booby-traps -- a 'fraidy mouse's worst nightmare? Would I make it through with my fur?