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.
Rainbow Dash loses her temper and yells at Pinkie Pie, driving the talkative party pony to make a drastic promise. Now, it falls to Rainbow Dash to fix the mess she's made, lest Pinkie lose a vital part of herself forever...
Rarity has convinced Pinkie Pie to spend some time at the spa with her. In an effort to understand a bit more about Pinkie, she asks some rather personal questions, which Pinkie answers with all the understanding and maturity at her disposal.
Like, at all. Unfortunately, she has to get her immunizations to continue working at Sugarcube Corner. With the help of a friend, she might just make it through.
After meeting Cheese Sandwich's brother and learning about their feud, Pinkie Pie takes it upon herself to help them mend their broken bond. Shenanigans ensue.