Joy wakes up daughter Charity only to find her laying in a wet bed. Charity had been hiding her wetting problem from her mother but her mother only has more bad news for her: they're visiting grandma. That means she's going to be sleeping with others and can't be wetting the bed around them. So Joy tells her daughter that shes going to have to start wearing diapers to bed. And she should start now because it's a long car drive, she needs to get used to it, and she doesn't want any accidents in her car.
Charity of course has to agree so she let's her mother put a diaper on her, something she hasn't worn since she was two. On the way to the car she can hear herself crinkling and is quite upset and tells her mother so. However, her mother thinks she's being paranoid and didn't notice anything. Chairty gives up and ends up falling asleep. As if only to prove her mothers point, Charity ends up having an accident and wets her diaper.
When her mother wakes her up she starts begging for a chance to get changed. Her mother refuses saying she doesn't want to stop because they're almost there and plus, that's why shes wearing the diaper. When they get to grandmas house she'll go with her to the bathroom to help her change into a dry diaper and get ready for bed.