Five of the youth of House Path are abruptly whisked away by the enigmatic Doctor Whooves, and they find themselves in a Ponyville that they can scarcely recognize. A tyrant queen rules Equestria, alliances were never forged with Griffonia and the Changeling Hives, and three of the group had never been born! Someone has changed history, and it's up to them to figure out when, how, and who did it, or Equestria will suffer, and the rest of the world along with it.
This is the direct sequel to "The Growing Years" and "A Different Perspective", and I advise reading those stories first.