Twilight's favorite doll Smarty Pants goes missing, and it was no accident - He was kidnapped! Under strict orders, Twilight will have to hope she can make it a whole day wearing diapers at school if she wants any chance of getting Smarty Pants back.

Rainbow Dash is in a little trouble - After a great party, she woke up wearing a diaper that won't come off no matter what she tries. Can she get the diaper off and make it to the bathroom before she has an accident? (Spoiler alert. No.)