It's Hearts and Hooves Day, and Fluttershy has received a heartfelt letter from a secret admirer! But to her fortune and/or dismay, Rarity has taken it upon herself to help discover who this secret admirer may be.
Following a tense argument at one of Pinkie's sleepovers, Maud challenges Rainbow to a round of her favorite game, Rock-Paper-Scissors, to decide who gets to make the rules while Pinkie's parents are away. Rocks and dramatic irony ensue.
Limestone Pie is more than a little annoyed to discover a budding archaeologist wants to try her luck at their rock farm, but nevertheless takes it upon herself to look after the kid. And to make sure she stays the hell away from Holder's Boulder.
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.
(Originally written by Matt11, transferred and rewritten with permission.) Pinkie discovers that Scootaloo is related to the Pies, thus making the filly Pinkie's fourth sister. She then sets out to make things right for the both of them.
(A sequel to "Rock Solid Approval?", takes place prior to "School Raze".) Cheese Sandwich comes back to celebrate the anniversary of his entering into a relationship with Pinkie, only to find out she's now a professor at Twilight's school.
(Sequel to Birthday Built For Two.) Pinkie Pie decides the time has come to introduce her special somepony, Cheese Sandwich, to her big sister Maud. But Cheese worries about whether Maud will approve of him and Pinkie being together.
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?
With the Cakes' anniversary coming up, Pinkie Pie struggles to find the perfect gift to say "Thank you" to her employers, and the ponies who have been like a second family to her for many years.
Pinkie's run out of helium for her balloons, and she won't be able to get any more for two whole weeks—which is practically forever. Thankfully, she's found one last balloon to hold onto, and she'll never it let it go.
While out on a rather standard errand, a young Rarity encounters a strange new filly. A hyperactive pink one, who seems to be struggling with her own newfound talent as well.