Twilight Sparkle accidentally leaves her class with the wrong backpack. Normally, this wouldn't be a problem, except that the backpack belongs to the one girl she's had the biggest crush on since moving to Canterlot High.
Princess Twilight has come back to the other world to catch up with her five human friends (and one pony-turned-human friend). What could be better than visiting Sugar Cube Corner, talking about the latest goings-on while sharing a brew with friends?