The Oracle's stone at the heart of the new immortal Arcane master Twilight Sparkle's castle has called out the Caste Mark of Twilight's Student, the Binding mage Starlight Glimmer and is sending her to the royal palace into the presence of the Arch Mage herself where she will discover that Gods of night and day can sometimes get along about as well as... well, night and day.

Starlight must learn why she was sent instead of anyone else and how to solve this problem without an angry duo of super powered immortal Demigod princesses burning her to cinders.