In an effort to have an adventure that doesn't end in psychological damage, Morty makes a bet with Rick that he can take them on a trip that's fun and delightful without flaking out at the end. Their bet leads them to a whimsical storybook fantasy world. There Morty undertakes a quest to help an ailing village. After a series of mishaps, the duo end up in a bar. It's here that Morty has an unpleasant run-in with a certain anthromorphic snack.
Mr. Jellybean is a shining light in the fairy tale kingdom, enough that the lowliest peasant treats him with respect. Even when their town is undergoing financial crisis, they never seem to have a bad word for their King.
A friendly chat turns deadly when Mr. Jellybean's kindhearted demeanor proves to be a facade. Deep down, he is a twisted monster. He gets dangerously close to Morty, trying to have his way with him. Morty very obviously does not appreciate this. After an intense struggle, he manages to power through and violently slam the offender with a toilet seat.
Morty doesn't tell his grandfather what occurred after, but declares Rick the winner. Scared and violated, Morty wants nothing more than to go home. Rick cheers the boy up by honoring his bet to help the villagers and conclude the adventure, all as he eyes the injured Mr. Jellybean stumbling out of the same restroom.
Back at the village, Morty offers the money Rick won in a card game. The grateful townsfolk introduce their leader, but Morty bolts when he realizes it's Mr. Jellybean. Rick follows, but not before killing the King in front of the crowd.
The village later builds a statue in his honor. A citizen looks on until a fellow neighbor approaches him with pictures of Mr. Jellybean performing unspeakable acts; likely the same one he tried to pull on Morty. The villager is disgusted, but quickly tells the other man to burn the pictures. He declares it's better for the public to remember him as a beloved ruler than the sick individual he truly was.