Mary Henry (Hilligoss) is riding in a car with two other young women when some men challenge them to a drag race. As they speed across a bridge, the women's car plunges over the side into the river. The police spend three hours dragging the murky, fast-running water without success. Mary miraculously surfaces, but she cannot remember how she survived.
Mary then drives to Utah, where she has been hired as a church organist. At one point, she can get nothing on her car radio but strange organ music. She passes a large, abandoned pavilion sitting all by itself on the shores of the Great Salt Lake; it seems to beckon to her in the twilight. Shortly thereafter, while she is speeding along a deserted stretch of road, a ghoulish, pasty-faced figure (billed as "The Man", played by director Herk Harvey) replaces her lection in the passenger window and stares at her. When The Man suddenly appears in front of her, she swerves off the road. At a gas station, the attendant tells her the pavilion was first a bathhouse, then a dance hall, and finally a carnival before shutting down.