From Bad to Worse

"From Bad to Worse" is the thirteenth episode in season three of Adventure Time.

Synopsis
When another plague of Candy Zombies arises and Princess Bubblegum is among the undead, Finn and his friends are in a race against time to figure out how to stop it...without making things even worse!

Plot
The episode begins with Finn, Jake, Lady Raincorn, and Lumpy Space Princess running from Candy Zombies and just barely escaping to the Castle in the Candy Kingdom. They see Princess Bubblegum. They are informed that while Princess Bubblegum was experimenting with candy zombie tissue, Cinnamon Bun ate it out of hunger and then infected the entire Candy Kingdom while Princess Bubblegum escaped.

Princess Bubblegum then says that she is coming up with a cure, but a candy zombie bursts through the window and bites her on the shoulder. She tells Finn to use Science but, before she can explain, she is dragged out of the window and turns into another zombie. Finn then says they will have to make there own formula to cure her and the Candy Kingdom. Finn tests his cure on a candy zombie but with horrible results. The candy zombie grows wings and infects the other zombies with the same liquid giving them wings as well.

There is a view of Starchy on top of a building stating he's glad he's not down there with all the zombies and starts to do a little dance, but is grabbed by Pineapple Guy and thrown into the window and breaks through the wood.

Finn and the rest of the group escape to the top of the castle to continue to try and cure the zombies. Lumpy Space Princess then drops her formula on to some of the zombies, but it does nothing but give them enlarged lips. LSP wants this to happen to her and ends up getting turned into a zombie herself. Jake and Lady Rainicorn then test their formula, but it only makes the zombies stronger. The candy zombies use their new abilities to reach the top of the castle and attempt to bite the group, so they retreat to the lab. The zombie Candy Cane Guy comes out from hiding in the lab and bites Jake, who uses his Stretchy Powers to prolong the effects. However, Jake realizes he will become a zombie, so he goes into a sealed science shower. Lady Rainicorn feels sorry for him, and lets Jake out, only to be bitten. Then, the candy zombies break through to the lab, and Finn locks himself in the science shower. He then realizes that Science is Princess Bubblegum's rat. Science creates the antidote and Finn tests it on Jake, discovering that it works, but then Jake gets attacked by the mob of Candy zombies that were standing by him. Finn covers himself with the antidote, and jumps into the crowd of zombies.

It cuts to all the candy people back to normal, and we see Princess Bubblegum awarding Science with a medal. It ends with Princess Bubblegum yelling rejoice three times to the cheering Candy People.

Characters
Major Characters
 * Finn
 * Jake
 * Princess Bubblegum
 * Lady Rainicorn
 * Lumpy Space Princess
 * Science

Minor Characters

 * Candy Zombies
 * Cinnamon Bun
 * Chocoberry
 * Banana Guard
 * Pineapple Guy
 * Candy Cane Guy
 * Chocolate Bar Guy
 * Starchy
 * Peppermint Butler
 * Snail

Trivia

 * Along with "The Creeps," this episode aired as part of Cartoon Network's 2011 Halloween programming event.
 * This episode involves the candy zombie plague that first appeared in "Slumber Party Panic".
 * A few minutes of this episode were previewed at the Adventure Time/Regular Show panel at New York Comic Con 2011.
 * This is the third time Lady Rainicorn calls a character by name. In "Video Makers," she calls Jake while using Korean, pronouncing his name as close to English pronunciation. In "The Creeps," She refers to Jake; pronouncing like a transliterated name into Korean. However, in this episode, she uses a perfect English pronunciation to call Jake.
 * This is the first time where Lady Rainicorn is referred to as "L.R." by Finn.
 * The plague is caused by Cinnamon Bun eating the zombie flesh, however, in "Slumber Party Panic," when the Candy People ate the candy from inside the zombies, they were unaffected.
 * The sticker on Science's cage is a reference to the AMC televised version of "The Walking Dead."
 * As Finn was the only one to escape being turned into a zombie. Ironically, a zombie version of him made a short appearance in "Slumber Party Panic" in the middle of the candy zombies.
 * This is the second episode where Finn mistook what PB said with one of her pet's name, the first time was in "Death in Bloom" when he confused PB saying, "I'm coming back on the morrow." to mean she was coming tomorrow.
 * When Princess Bubblegum said "Science is Maahraah" she was trying to say " Science is my rat."