Twilight and Rainbow have to spend a whole year in the Padded Empire, in hopes to help em become part of Equestria.

Rainbow buys a mysterious tutu from a merchant, but ends up being cursed. Would her friends find the conterspell in dread makers castle

Rainbow ends up in a horrific flight accident costing her to be grounded forever, and lose control her bowels/bladder permanently. It's up to Twilight to cheer Rainbow up.

Since the residents of Ponyville accepted Twilight for her Diaper fetish and her wearing em in Public, But Twilights life takes a whole new turn when her fillyhood friend moves into Ponyville and in with her