Guardians of Valhalla

I am a Valkyrie, sent by my sisters to Midgard after one tiny mistake.
The worst part is that I absolutely hate this planet, the one the humans call "Earth."
I'm ready to return to Asgard, where I may grow victorious and earn my place in Valhalla.
My plans are foiled, however, when three Asgardians appear on Earth to warn me against returning: Fenrir, the wolf shifter meant to destroy the world, Freyr, Freyja's brother and God of desire, and Tyr, Fenrir's worst enemy.
I will do everything I can to end Ragnarok and return home, but there's something about these men that makes me think Midgard might not be so terrible after all.