Lala Kudo, a petite girl with a 140cm frame, runs away from home after fighting with her mother. Wandering the streets, she ends up at the house of a kind man who approaches her gently. After enjoying a warm meal at his place, Lala feels content and gradually dozes off. Soon, she wets the futon while asleep. Panicking, she bursts into tears, but the man comforts her softly: "Don't cry. I'll put a diaper on you, so relax." Surprised, Lala is shown various cute disposable diapers and gets to pick one to wear. Though embarrassed, she can't complain after wetting herself. As she tries different diapers, she continues wetting more and more, steadily soiling each diaper. Her journey of shame and submission is vividly captured.