Buried within the crumbling basement of an old Iowa church lies a secret so dark, the mysterious Order of Onyx and Light has guarded it for two centuries. Until now. When an ancient evil emerges from the heart of the church, chaos is unleashed in this sleepy town, and two strangers are thrust into a nightmare they could never imagine. Edwin Carmichael, a broken man haunted by loss, must face a monstrous entity to save his son’s soul from eternal damnation. Lincoln Scott, a desperate father, wages the same battle to save his daughter. Bound by fate, they stand against this sinister force. As unexpected foes emerge and time runs out, Edwin and Lincoln are plunged into a pulse-pounding showdown between good and evil.