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.
Pinkie has a secret. So far, she's kept it from everyone, but Twilight can tell that something's wrong with her. So she offers what vague support she can… until Pinkie takes her into the basement to show her.
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...
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 their argument with Fluttershy, Rarity and Pinkie return to Sugarcube Corner in tears. Are they really following pointless pursuits? Rarity decides to stay the night. If they are to be frivolous ponies, can they be frivolous together?
Adagio Dazzle and Aria Blaze live in a slump, endlessly trying to forget the obvious. Perhaps all they need is something (and someone!) to cheer them up.
When the fair comes to Ponyville, Twilight agrees to go with Pinkie Pie. She sees it as the perfect opportunity to express her feelings for the pink mare… but how will Pinkie respond?
When Pinkie falls ill, Rarity takes her place as a foalsitter for The Cake Twins, and they take a real shine her to. This makes Pinkie feel like she's been replaced, and it's up Mr. and Mrs. Cake to show her that's not true.
Cheese Sandwich returns to Ponyville to plan a party for Pinkie Pie's birthday. But Pinkie suspects Cheese has another reason for coming back on short notice, and why does he seem to be acting so weird around her?
Sweetie Belle is a normal filly, at least she thinks so. But even among her fellow Cutie Mark Crusaders, she had always been different. Maybe it was some slight bouts of immature behavior or taking after her older sister.
The time has come for the four Pie sisters to use the Choosing Stone to find their special somepony. Love isn't a breeze; even when the right pony is thrown right in front of you.