Newbery Medalist Gaiman and illustrator Helquist team up for a new fantasy novella in which a young boy must free Asgard--the city of the gods--from the evil Frost Giants. Illustrations. An unlucky twelve-year-old Norwegian boy named Odd leads the Norse gods Loki, Thor, and Odin in an attempt to outwit evil Frost Giants who have taken over Asgard.

Thialfi, the Norse thunder god's goat boy, tells how he inadvertently helped the giant Thrym to steal Thor's magic hammer, the lengths to which Thor must go to retrieve it, and his own assistance along the way.