Charlotte annoys Vendetta with her April Fool's jokes. Vendetta then tells her to meet her at the park for a big surprise. Later, in the park, Vendetta has set up a rocket which Charlotte shows interest in. Vendetta orders three fiends to seize "the blue one" onto the rocket, but they seize her instead. Charlotte tells Vendetta that she thinks the fiends are color blind, meaning that they cannot see the difference between "mossy green" and "powder blue". One of the fiends light the rocket up, and Charlotte joins Vendetta on the rocket. Scissor fiend cut the rope for the rocket, and the fire goes out. Suddenly, a fire-breathing butterfly lits it again and they are fired into space. In space, Charlotte starts singing "Shiny Shiny Puny Star".
On Earth, one of the fiends had been stuck to the rope of the rocket. The Giant Kitty eats him, and drags the rocket back to Earth.
Vendetta: Why did I make fire breathing butterflies?!
Fiend: I am attached to the rope!
Fiend: There is a rope around my ankle! (accidentally takes Marvin's ice cream)
Fiend: I don't even like ice cream!
Fiend: Especially not banana nut!
Fiend: If hedgehog was a flavor maybe I'd like it...
- The entire episode is in Bulgarian with English subtitles that are intentionally incorrect. When Vendetta was just screaming "aaah!" the subtitle read, "Why did I make fire breathing butterflies?!"
- The end credits are also written in Bulgarian with English subtitles that read, "Created, written and animaticized by Yam Winfrey", "Vendetta accurately voiced by Ms. Aglaia Mortcheva", "Yelling fiend and Marvin shouted by Peter Merrymad", "Charlotte and Red Kitty Kat haphazardly provided by Amy Winfrey" and "MakingFiends.com is pretty".
- Charlotte says "Ден на шегата" (Den na shegata) throughout the episode, which means "April fool's" in Bulgarian.
- The hidden message reads:
The SEVENTEENTH episode of Making Fiends by Amy Winfrey. April Fool's! Den na shegata!
- April Fool's on MakingFiends.com
"New Student" • "Show and Tell" • "Vegetables" • "Scissor Fiend" • "Halloween" • "Kitty Kitty Kitty" • "Shrinking Slug" • "Birthday" • "Mrs. Minty" • "Feeding Pets"