Following the events of A Return to Form, Luna has been restored to her natural power and status alongside her sister. They have even managed to make up with their estranged older brother, Terra. With the newest addition to their family in the form of an artificial filly Nightmare Moon life promises to be interesting. But an offhand comment by Terra may prove that words are truly the most powerful of tools. Now Celestia has decided to revive an age old rivalry with her sister, the royal prank war! Can Equestria survive their antics? More importantly, can Celestia survive the dark duo of Luna and Nightmare Moon? Armies will be raised, shadowy plans enacted, and dignity will suffer in the sister's quest to be able to leer at the other and proclaim, "Gotcha!".