Beth’s big step-brother has found himself shrunken, collected and now held in the grasp of his bratty little step-sister. Beth's come to the conclusion that she'll be much better off if she becomes an only sibling. She likes to be fair and play games, so she invites him to participate in one which will decide whether she will chew him to death, bite him in half, or swallow him whole and alive. She's curious what it will feel like to have a tiny little step-son, her own step-brother, inside her. Luckily, she will get to find out. But the teasing and torment of her big step-brother, has an unexpected effect on what's going on in her panties.