Thor, the God of Thunder, has been found unworthy. No longer able to lift his mighty hammer Mjolnir, the fabled weapon lies abandoned on the surface of the Moon. Now, with the Earth under attack from a horde of Frost Giants, the time has come for a new champion to wield its power - one unlike any seen before. But the Goddess of Thunder is about to discover that her greatest challenge comes not from her enemies, but from the All-Father himself. Can she prove to Odin she is no Asgardian usurper and instead worthy of his son's legacy?