Anna doesn't know what it is, but there is something strange about her father-in-law. He just seems too nice. Her husband tells her that it is just because he likes her, but that isn't it. One day, when her father-in-law comes to visit, she gets her answer. He's into adult women that like bottles and jumpers.
Anna's father-in-law wants Anna to be his new "baby". She rejects him out right. But she doesn't understand why the idea of wearing a diaper and calling him Daddy excites her so much.