Teenager Greg Arkin, who lives alone with his mother Mrs. Arkin, collects insects in his home. After arguing with his mother, he puts the insects in his car and has an accident on the road, and is attacked by the insects. He has a metamorphosis, becoming a powerful insect. He kills his mother and he chooses Lana Lang to be his mate for procreation purposes. In the end, Clark saves Lana from Greg's cocoon.