A disgraced cleric finds himself cast out from the Orthogonal order after a violent act of vengeance—one born from the sacrifice of his adopted daughter by those he once called brothers. Marooned in a fetid swamp, he's pulled ashore by an enigmatic figure who furnishes him with a magical staff, an ancient tome, and a cryptic directive before vanishing. Armed with these tools, the priest enters a twisted medieval realm where the seasons themselves have fallen into unnatural chaos, and he must hunt down the heretical cults responsible for spreading plagues and corruption across the land.