The Conversion War is over, ponies have lost a war caused by their formally beloved leader Celestia. Reservations in the former Equestrian state have been set up, while humans move into the new state of Lincoln.
A human buys a planet called “Harmony” and decides to mess around with the natives. What could possibly go wrong when he provides weapons never even thought to exist?
Something stirs beneath Equestria, dark forces and evil organizations plan to usurp the peace of the world. Sensing the coming storm, the Wizard searches for one who will defend this world, and become Equestria's Mightest Mortal!
Humanity's space exploration ultimately took the form of billions of identical probes, capable of building anything (including astronauts themselves) upon arrival at their destinations. One lands in Equestria. Things go downhill from there.
Humanity has overcome it's failures and united together to create a world of peace, prosperity, and progress. However, when a cataclysm of epic proportions threatens the human race, actions must be taken to hibernate below, and one day, re-awaken.
A band of misfits must come together to foil corrupt Canterlot elite, war criminals, and old enemies. Meanwhile, Princess Twilight Sparkle must divert her attention between Equestria on the brink of war and a vengeful threat beyond the sea.
Returning to the past, Twilight does what is necessary to save Cooper from his fate. The consequences for such choices, however, are not to be underestimated. Only time will tell if it was worth it...