On the eve of the Summer Sun Celebration, Spike discovers all of Ponyville has been trapped in a deep sleep by an unknown enemy. What's more, even he himself is falling victim to the spell. Fortunately, the Princess of the Night is wide awake, even when she sleeps.

It was just like any other night. The moon had been up for hours and the ponies rested peacefully in their beds. Celestia, on this normal night, decides to take a stroll around the quiet palace.

This seemingly routine walk changes everything for her as she finds one young unicorn thief trying to rob her.

And this thief, harnessing magical powers quite rare to normal unicorns, catches Celestia's attention.