The newly crowned Princess Twilight wants to know more about the new forms of magic available to her. It's Pinkie Pie's turn for study... and that may be a problem.
In an AU where Pinkie barely misses the Rainboom, neither she nor Cheese Sandwich are party ponies. However, Cheese ends up working at the Pie family rock farm.
How did Pinkie Pie come to live at Sugarcube Corner? Fresh off the success of her first party she heads off to increase happiness in others, and finds a struggling shop to aid.