“Weapons of untold power. The might of an Alicorn—concentrated into a single squad of ponies. Look at our glory, brother! Your inventions put to mass production, with my leadership and bold tenacity. Together, we will push Equestria into new heights of prowess!”

Through a sudden surge in technical inventions stemming from the ability to hold and store magical energy, the ponies of Equestria find themselves no longer dependent on the princesses to rule and protect them. The Canterlot Observatory houses the ability to raise the sun and moon, and new weaponry has given the ponies the strength needed to take matters into their own hooves.

The age of "might makes right" is now an old shadow of the setting sun. And with their reign coming to a close, the princesses must make a wise decision fast as their enemies close in. With the political pressure on them, the fellowship of Twilight's friends is breaking, and it could be that a Sonic Rainboom that tied them together in the beginning will now be a signal for the end.

This is the prequel to the unfolding events of the three-part story series Princess.