When Derpy eats a tasty-looking snack in the Doctor's laboratory, she doesn't realize that it contains an experimental serum—one that has an odd effect on her bust size. And that's not the only part of her that's growing...

Twilight is fed up with Spike's need to constantly pleasure himself, and sends him to Zecora to get his overgrown libido treated. Yet Zecora sees Spike's draconic lusts and size as an opportunity, and is determined to meet his—and her own—needs.

When a Babs Seed-turned-amazon asks ex-boyfriend Rumble if he's down for some fun, the poor little lovestruck stallion might find out that he's bitten off more than he can chew.