Mary is trying to go to sleep with her blanket, pillow, and teddy bear when she hears knocking at the door and footsteps outside. Someone calls her name, and a monster appears saying it is hungry and will eat her. The monster makes loud noises and shows its mouths, noses, eyes, ears, feet, hands, and face to Mary. Mary tells the monster to go away. Finally, the monster leaves and Mary is able to sleep once more.