Diamond Tiara's friendship with Silver Spoon shatters, forcing the rich filly to make amends for her actions and maybe make a few new friends along the way.
Chrysalis has won the battle: Canterlot - and soon, all of Equestria - is hers. But staining her perfect day crimson is one casualty: one death she cannot - will not - allow. No matter the cost.
Queen Chrysalis wasn't the first to take Cadance's place, since her childhood she has been replaced by changeling after changeling. With this new revelation, finding the real Cadance is going to be a lot more complicated.