Odd and the Frost Giants

Odd the Viking boy has run away from home, even though he can barely walk and has to use a crutch.

Alone in the forest, he encounters a bear, a fox and an eagle, each of whom has a strange story to tell. They need Odd's help to save the city of Asgard from the Frost Giants who have invaded it.

It's going to take a very special kind of boy to defeat the terrible Frost Giants and rescue the mighty gods. Someone cheerful and infuriating and clever.

Someone just like Odd.