Rune is a two-centuries-old werewolf who has spent his life seeking to give meaning to his curse while atoning for the damage it has caused. This quest for purpose has left him scarred in body and soul, however, and the truth and clean conscience he has sought have proved elusive. Despite his efforts to resist the seductive allure of his otherworldly nature's siren song, the monster within proves difficult to control. During a blizzard, a family of war refugees chances upon his secluded home while seeking shelter. Though Rune hesitates to welcome them, fearful they will discover his secrets and come to harm, he relents when they invoke a sacred rite of hospitality. Despite his efforts to keep his distance, Rune comes to care for the family, unaware his bond with these strangers will change the fate of everyone. As the family prepares to depart, Rune learns of unforeseen dangers that lie ahead for them, dangers from which he alone has the power to guard them. Bound by his oath of hospitality and his growing concern for the family, Rune vows to guide them to safety. However, the greatest danger proves to be that posed by the darkness he bears within his own heart. This darkness, however, is not so easily conquered.