In many alternate dimensions, Equestria is real. A particular one has been overrun with sexual sin and pride, to the point where collapse is inevitable if something doesn't change.

That is why Faust, mother of creation, needs assistance. And one man will rise to the task. Peter Browning cares about what Equestria ought to be, not what it currently is. And after seeing firsthand the depravity of this world, Peter and Faust set about doing course corrections. But will it bring about the annihilation of the entire planet?