Holly is not herself. She was once a pretty young woman, healthy and strong, completely devoted to her husband Richard. When she became pregnant, he was ecstatic. They would finally have a child to complete their love. But then Holly began to change. She began reading strange, old books and consorting with a mysterious midwife named Mrs. Crouch. Day by day, she becomes less like the woman Richard married, slowly degenerating into something evil and monstrous. The child she carries is not his. In fact, it's not even human. Holly is about to unleash hell into the world.