Princess Twilight decides that she wants a vacation, but doesn't want to leave things unattended. What can she do? Then she gets a book call from Sunset saying that Twilight(Student) wants to visit Equestria and an idea sparks into Twilight's mind.
Sunset Shimmer is now reformed, but everyone still avoids her, except Twilight's friends. She tries really hard to show that she has changed and hadn't meant what she had done. The new girl at Canterlot High doesn't make it much easier.
Lyra thinks Discord is an idiot for not thinking to dodge when the Elements of Harmony were about to strike him. Discord thinks this is the perfect opportunity for a game.
Starlight travels with Sunburst to an old abandoned unicorn settlement that predates the ruling era of the Two Sisters. They're searching for ancient lost spells but something "bad" happens to them.