Life should be good for 18-year-old Chastity. Going off to college should be a new start for her, the beginning of her adulthood. But when she moves in with her mom and stepfather, he is a great deal stricter than she knows. While her mom is away for work, Chastity's stepfather makes sure his baby girl is following all his instructions to the letter. On her return from college, he checks to see if her panties are dry and, causing her to dampen them, immediately makes her wear her diaper.

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.

Baby Becky has been naughty because her daddy is going out with his work friends and leaving her with strict Uncle Robert. Defiant and angry, baby Becky decides she will test Uncle Robert but gets more than she bargained for when Robert smacks her little bottom. When he realizes she's peed her diaper, Uncle Robert starts to change her when he notices just how wet and perfect her little womanhood is.

It was supposed to be just one night. One last sin before I went back on the straight and narrow. The worst kind of sin, taking an innocent girl and unleashing all of my darkest fantasies on her. No safety word. Completely confidential.

This is bad. Very bad. He's rubbing off on me. Resident bad boy Ethan Colton is turning me into an irresponsible bad girl. Rule number two: When I tell you to come here, you come here. It's still an order, still practically growling at me, commanding me to obey him, but it's more, too. It's fun and flirty, a little playful. I can see why girls fall for him, can see why his devious smirk melts their resistance, because it's doing the same to me.