Joy is looking for a nanny for her adult baby, Gidget. Gidget is quite the baby in many ways; still wetting her panties, crawling around and suckling on her thumbs. But Joy can't do it all alone anymore since her husband left so she decides it's time to hire a helper.
Diane answered her ad. Joy spends some time explaining that Gidget still wets herself, and as if on cue, Diane discovers Gidget has wet herself. Joy isn't happy with the tiny girl so she bends her over her knee and gives her a good spanking. There's no point in trying to wear big girl panties if she's just going to continue to keep wetting herself. So Joy decided this is a good time to teach Diane how to put Gidget in a diaper since obviously trying to move her to big girl panties is pointless.
After all the introductions and explaining how to take care of Gidget, including a thorough demonstration of how to breastfeed. Both Joy and Diane take turns giving Gidget plenty of breast suckling time, as Joy explains that eventually Diane will start lactating as well.
After Gidget is put to bed, Joy asks Diane to help her unbutton her dress real quick. Diane obliges, but then remembers something and chases after Joy only to discover Joy stripped down to just a Depends Pullup. Diane is shocked, and amused, teasing Joy about it. Joy explains that since she's had Gidget she's had problems controlling it when she sneezes or coughs. Diane puts her hand on Joy's Depends and notices she's not just a little wet, but really wet.
Diane takes advantage of the situation and bends Joy over her knee and starts spanking her. Joy is mortified, shocked that her nanny is spanking her . . . until she realizes Diane is just trying to flirt with her. Joy hasn't been with anyone since her husband left due to Gidget still being a baby, and Joy having her own wetting accidents. But Diane embraces it and asks to change Joy's pullup before realizing she doesn't know where to move her stuff into.