To the surprise of the twins, three visitors come over: Shining Armor, Princess Cadence, and Princess Flurry Heart. Mr. and Mrs. Cake bow and ask why they're here, and they reply that they stopped for food on the way to visit Twilight, bringing Flurry Heart because Sunburst has the flu.
Flurry Heart is put in the playpen and Shining is a bit concerned that the babies will misbehave, but the mares reassure him that it's not very long and they'll be nearby.
While the adults eat and talk, the twins bond with Flurry Heart, who reveals that she's a princess and can't communicate with adults yet. She mentions that her inability to be understood by adults makes it easier to play tricks on Sunburst, who she explains is her teacher, foalsitter, and parents' friend.
When she mentions diaper-changing, Pound boasts that he and Pumpkin are going through potty training, but she doesn't know what that means and when it's explained to her, she doesn't want to ever go through it. Pound says that he was like that initially too.
Pumpkin asks Flurry what she likes to do for fun, and Flurry mentions playing with adults, including Flash Sentry, which gives Pumpkin the idea of flushing her, since "Flash" and "flush" sound similar. She whispers the idea into Pound's ear and he agrees that it would be fun for them both.
They take her into the bathroom and tell her that the toilet is a water slide. She gets in and they flush her, but then she teleports back out. She reveals that she realised when she saw the handle on the way to the bowl, but played along because she wanted to be flushed to know what it felt like, and she actually enjoyed it. Pumpkin apologises, but Flurry Heart tells her it's fine and they fly back to the playpen.
This episode provides examples of
- Baby Language: Flurry Heart can speak to the twins, but not the adults.
- The Diaper Change: Discussed when Flurry Heart thinks a crystaller is someone paid to change diapers.
- Fun with Flushing: As the title would suggest, Flurry Heart gets flushed down the toilet.
- Goo Goo Getup: Discussed when Flurry Heart says she wants to never be potty trained and be known as the Diaper Princess.
- Out Sick: Sunburst has the flu, so he can't foalsit Flurry.
- Shout-Out: The "X go down the hooooole" line from Tiny Toon Adventures is referenced again.
- Teleportation: Flurry Heart teleports out of the toilet after being flushed.
- Unreliable Narrator: It's said that Flurry was still unsuspecting seconds before being flushed, but then she's revealed to have realised on the way to the bowl.
