A mysterious epidemic strikes an Old West frontier town, causing young girls to fall deathly ill. Doc Carter, his daughter Dolores, and preacher Dan Young struggle to care for the sick. When a patient dies unexpectedly, Dan notices two puncture wounds on her neck. His investigation leads to Drake Robey, a strange gunslinger who, despite being slower on the draw and even shot, always survives. Dan soon uncovers that Drake has an aversion to crucifixes, sleeps in coffins, and cannot tolerate sunlight.