Great depression, East Texas. Young Harry Collins and his sister accidentally discover the monstrously mutilated corpse of a woman left in the lower reaches of the river. Soon, another body is found in the city, and then one more, and people panic, believing that a dangerous madman wanders somewhere nearby. Harry begins his own investigation, because he believes that these murders are somehow connected with the tales of the half-man, a strange creature, which, according to legend, lives not far from the place where the body of the first sacrifice was discovered. And soon Harry will understand that the truth is much worse than any legend, and the killer is getting closer to his family.