Teenage stable hand Sigrid wants to become one of the mighty and fearless valkyries. But with only a wingless gelding as her bonded pair, there's no chance in Hel of that happening.

When a vision shows Sigrid leading a valkyrie charge on the legendary eight-legged horse, Sleipnir, a greater destiny becomes possible. Determined to fulfill it, she makes an alliance with an enemy valkyrie who has nothing to lose, who seems to have an agenda all her own, and who leaves Sigrid more than a little flustered.

Together, they cross the nine worlds, battling night elves, riding sea serpents, and hurtling into fire to learn the truth about Sigrid's birthright. An unexpected but powerful friendship forms, and Sigrid hopes even something more.

In the deepest realms of the cosmos, Sigrid must decide between a destined fate or a chosen path.