Finn and Jake go to a party in the Candy Kingdom. But Finn notices Ricardio the Heart Guy, a random heart that appeared at the Kingdom, is with Princess Bubblegum. Out of jealousy (though Finn says it was out of weirdness), Finn tries to prove that Ricardio is evil while Jake is trying to prove he is good.
After Finn gets cursed by the Magic Man and is turned into a giant foot, Jake and himself try to find out how Finn could use his new body for good, which ends up in them meeting others that have been cursed by the Magic Man.
Finn and Jake befriend a small, double-orb like creature and named it The Jiggler. They have fun, but then problems come about. The Jiggler begins squirting pink stuff and Finn and Jake must fix The Jiggler.
When Finn and Jake accepted an offer from Reaper for wizard training, they set out to get their own "big star," and become true wizards, but when Finn finally gets his big star, BUFO makes him protect the Wizard Academy unwillingly.
Finn and Jake see and head toward a strange looking turlte-shell called the City Of Thieves, even though they are warned not to go into it. After meeting a little girl named Penny, they go into the city to find Penny's flower basket, but Penny twisted the plan about her stolen flower basket.
To help pull a prank on Jake when Finn was pranked by Jake with a bag of Butter, Finn creates NEPTR but when created, it turns out NEPTR wasn't fully functional, so Finn needed more power. After taking some from Ice King, problems come and NEPTR must solve them.
Finn and Jake were chasing a Newt for stealing a pair of boots. Making rhymes about the Newt, Jake followed the the Newt into the ocean. Finn, on the other hand, was about to do the same, but hesitated by the look of the water.
Finn accidentally hit a magical bottle to Princess Bubblegum, causing her skin to change in color from pink to green, while she lose her bubblegum hair. She blames the Duke of Nuts on her appearance but she only dislikes him for always eating all her royal pudding. Finn goes along with Princess Bubblegum because she said she would never forgive the person who did that to her. Now Finn must find him and tell the truth in order to make things right.
Finn and Jake find out about a monster called The Gut Grinder. But Jake begins to think he is The Gut Grinder because all of its traces match Jake's appearance. This leads to Jake really thinking he is a monster, and disaster happens.
Jake is sick and the only thing that can make him better is a real story that consists of romance, action, suspense, and a happy ending. Finn then goes on an adventure in a forest to get such a story, but he may face problems when trying to find such a story.
The Cutie Clan, who are ruled by Cute King, plans on attacking Finn and Jake. They think that killing Finn and Jake will make people take them more seriously, rather than people thinking they're just really cute.
Finn and Jake are at an event called Wizard Battle where the wizards of Ooo come to fight to claim a prize. When Finn finds out the prize is a kiss from Princess Bubblegum and that Ice King cheating his way to victory, Finn decides to enter the competition to stop him.
Cuber returns again from the episode Five Short Graybles, to tell us five more stories that all have something to do with each other. Finn and Jake stick their thumbs in everything they see, Ice King gets married to his foot, Tree Trunks thinks that a statue is flicking her off, Marceline rides a giant's finger to the music store, and BMO tries to teach Football how to drink tea fancily.