A full yellow moon shines down from the black sky... Mike and Susan are on their way home from a school dance. They kiss good-night in the light of the moon outside Susan"s house. Then Mike crosses the park to get to his house, but is attacked by something he cannot describe... Susan watches her body change. She knows that something is wrong. The light of the moon shines from her eyes like an evil fire. She is helpless. What terrible secret does the moon hold?