Geronimo Stilton. Micekings

"Who is Geronimo Stiltonord? He is a mouseking -- the Geronimo Stilton of the ancient far north! He lives with his brawny and brave clan in the village of Mouseborg. From sailing frozen waters to facing fiery dragons, every day is an adventure for the micekings! The micekings are in a panic. The village's best cook is ill, and until she recovers, there's no delicious stew to eat! Geronimo Stiltonord departs immediately in search of a cure for her....

Determined to earn a mouseking helmet, Geronimo Stiltonord undergoes special training conducted by Miceking chief Sven the Shouter.

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.