An anthropologist by the name of Dr. Brockton discovers a prehistoric troglodyte in a cave nearby. This "missing link" from the Ice Age is a creature that is half-caveman and half-ape. She is able to talk with him and domesticate him via the use of medical experimentation just in time to prevent an irate land developer from releasing him into the wild where he will go on a rampage and terrorize the local populace.