Steve is in Northern California searching for two missing scientists, Ivan and Marlene Becky, who have mysteriously disappeared while placing earthquake sensors near a fault line. During his search he discovers footprints which he follows until he is approached by the giant hairy beast. A small battle is fought and the creature runs into a cave. Steve follows, but passes out due to a lack of oxygen. When he awakens, he is on an operating table and a beautiful being, Shalon, and her alien assistants are studying him.
