Twilight Sparkle has been a princess for over a month now. She has been studing everything she'ld have to know about being a ruler. But will her books help her with the unexpected news from Luna?

The invasion on Canterlot has been stopped and the swarm blown away by a shield of love, but living in the city is another queen. What is her plan? Is she going to attack from the inside? Or is she hiding from something worse?