Paloma Chanul is the curandera of the small town of Culantro, the equivalent of a shaman healer. But her confidence in her abilities disappeared when the yellow fever tore through town and killed many townsfolk and riversfolk. Her boyfriend, Canelo, has a hard time consoling her while keeping up with his duties of Sheriff; he has been unfaithful in the Past, so he is trying to be a good man to Paloma. As the two struggle to work through these issues, a new threat takes root in the town of Culantro. Riversfolk begin to disappear in the middle of the night and are found in the morning...completely shriveled up. But is the culprit a supernatural monster or a serial killer that feeds off the overly superstitious population?