Noi, a filly with a normal life, after a medical accident invlving an insane doctor, is turned incontinent, and forced to wear diapers; and to her condiction, the true colors of a "spartan sister", and hypocritical classmates shows up.
However, as soon Noi enters in her darkest hour, another filly, enters in her finest, and, while she is on the top, she decides to go down, help Noi in her quest for accept her condition... or fix it.
It should be noted that this story contains incontience, so, if you don't like it, please leave.
Also... not sure about the rating, I guessed that "Teen" was going to suffice.
EDiting credited to AuthorGenesis