In defiance of her father, Caledonian tribeswoman Barta leads a daring raid against invading enemy warriors. But the fight goes badly, and her beloved war hound, Loyal, is killed. Unable to imagine existing without her dearest companion, she nevertheless must return home and accept blame for her terrible blunder.

For the first time in his life, Loyal is unable to rise and follow his mistress. When he appeals to the Goddess for mercy, she grants him leave to return on one condition: it must be in the form of a man. And only if Barta recognizes him for who he truly is will he be permitted to stay.

Loyal never suspects that, as a man, his connection with Barta will deepen, becoming passionate enough to transcend nearly any change. Will Barta recognize him before he's lost to her forever?