Princess Sterling sends the Dragon of the Rainbow and Scribblehopper to bring Geronimo Stilton back the the Kingdom of Fantasy, because he is the hero in the dragon prophecy who will find the stolen dragon egg and restore harmony to the kingdom.

England, 1388: All her life, Louisa has dreamed of finding the rumored “Giant’s Treasure,” a collection of ancient, lost riches said to be hidden on a mountaintop in Scotland, guarded by a fierce monster. It’s a story her father used to tell her, and when he dies and she and her younger sister have to go live with their shiftless, greedy uncle, Louisa is determined to find that treasure. It’s the hope that has kept her defying her uncle’s...