Christopher Sinclair goes out for a walk on a mild Arizona evening and never comes back. He stumbles into a freezing winter under an impossible night sky, where magic is real -- but bought at a terrible price. <br><br>A misplaced act of decency lands him in a brawl with an arrogant nobleman and puts him under a death sentence. In desperation he agrees to be drafted into an eternal war, serving as a priest of the Bright Lady, Goddess of Healing. But when Marcius, god of war, offers the only hope of a way home to his wife, Christopher pledges to him instead, plunging the church into turmoil and setting him on a path of violence and notoriety.<br><br>To win enough power to open a path home, this mild-mannered mechanical engineer must survive duelists, assassins, and the never-ending threat of monsters, with only his makeshift technology to compete with swords and magic.<br><br>But the gods and demons have other plans. Christopher's fate will save the world... or destroy it.