By her mere existence, Princess "Derpy" De Raptura ushers in a new era in Equestria's history. The first commoner to ascend the throne, the first new monarch of Equestria for more than two thousand years, Derpy faces the unenviable task of bending a fractious and ambitious political establishment to her will when her experience amounts to little more than planning the best delivery route each day.
Yet it seems that Derpy must face the true price her new-found power demands. To raise the sun she must love the whole world, but to give that love she must endure a burden far greater than she could possibly imagine.
Calamity befalls the royalty of Equestria and, in lieu of plans that took decades to create and moments to ruin, control of the cosmos is bequeathed to the only pony Celestia had time to empower.
On the advent of her coronation, Princess "Derpy" De Raptura continues to adjust to life as Equestria's newest ruler, but soon finds that the power she was granted requires a greater sacrifice than she could ever have thought possible.