A dreaded time, Nightmare Moon has returned to Equestria, she has a lust for power, and co-ruling with her sister, Princess Celestia, wasn't enough. However, a subsequent chain of events creates an inter-dimensional rift that causes the transportation of an Alien Military, the Union Armed Forces, to Equestria. They are similar to the United States Military, even the same design base for weapons. When they ended up in Equestria, the dreaded Mare in the Moon had considered them an obstacle, and becomes hell-bent on destroying them, unfortunately, innocent ponies are caught in the crossfire. Nightmare Moon goes from power-hungry mare doing so in spite of jealousy, to a cold-blooded killer letting nothing get in her way. Will the Union and the ponies of Equestria save their homeland from this mare's hostile takeover? Or will Nightmare Moon have her way, and take total control the planet.