From publisher blurb:
With Hel's plot unearthed, the Nine Worlds beckon, for somewhere beyond Midgaard lies Odin AllFather's scattered Fimbulwinver Runes! And to stop Hel and bring peace to King Hrolfr's realm, someone must fetch the runes and return them to Valhalla, before any take note!
But beginnings are oft as hard as endings and King Hrolfr's heroes must first sail to the frigid seas of the north and seek out the portal to the shadowy world of Svartalfaheimr in hopes of seeking the first of these coveted Runes of Odin AllFather.
Svartalfaheimr, however, is an endless world of shadow and confusion, where Dark Elves rule sprawling realms from deep places, wild beasts hunt for wreck and ruin and the Lord of that world is crafty and altogether evil. Somewhere in the midst of this lies a wise man, Boddi, who can serve as a guide through the Nine Worlds and aid those seeking the Fimbulwinter Runes before either Odin or Hel, or their agents do in time.
To fetch the runes, to find the guide, all this before the wrath of the Dark Elves is unleashed and before Odin AllFather learns of what's afoot, for his fury is one none can withstand and failure, unbeknownst to all, means the end of days . . .