Rainbow dash wakes up wet as usual but something is different but she can't tell what. She starts off with her normal day but it's so unusually quiet and she cannot find anypony. She stops at the library and spike is there to greet her "Hello Rainbow dash what do you need today?".Rainbow walks by without noticing spike at all. She goes to the back of the library she finds the small shelf with a sign that clearly says ADULT FOALS. She gets 3 books that have adult ponys dressed as foals and walks out without talking to anypony. She gets to her house locks the door. Pulls out a box with onesies,diapers,bottles,pacifiers,and a almost full diaper pale. She puts on a clean diaper a onesie and makes herself a bottle of milk with a laxative in it. A few minuets later she feels her stomach starting to cramp so she pushes her poop into her diaper while she Does that she feels a dampness around her legs. She came To the realization she is becoming a full adult foal. She walks around with her messy diaper for a few minuets. She Decides she needs to get some more foal stuff so she gets to the store. She is still in her diaper but with normal clothes on as she is talking with applejack she feels a wetness between her legs again but this time. The diaper leaks and she dosent realize it till applejack points it out. Rainbow says. She was trying to shoplift a soda and runs to The bathroom where in there she gets a foal diaper with stars and a big pink star wetness indicator which will soon be gone. She buys foal print adult diapers and all the other foal stuff and even a crib. When she got home she went to put on her bedtime onesie and noticed that she was wet and poopy but she doesn't remember messing her diaper. She got in he'd bed and heard the plastic on the diaper and crib cover she felt like a foal. The next day she woke up to a very wet and messy diaper.she felt very weird that day and looked at herself in the mirror and what she saw was just crazy. She didn't know if she should cry or be excited but what she saw was not the rainbow dash we know but the rainbow dash in her own imagination. She yelled "it worked. It really worked."...but how will she hide what she saw.