Abstract Finn, BMO and Lady Rainicorn are slightly disturbed by Jake's new alien appearance while Jake himself seems oblivious, or rather in denial about it. After having a bizarre dream about Jermaine painting abstract art, which according to Jake he hates, he decides to go look for him.
Ketchup Marceline is unexpectedly visited by BMO causing the former to ask BMO to download a USB drive. While they wait, BMO tells the story of when it, Finn and Jake traveled the seas. However, the story is mostly inaccurate and involves a cat named Ted and a blue jay that says "OOOOOOHH!"
Fionna And Cake And Fionna At a Fionna and Cake book reading by Ice King, an old woman claiming to be Fionna arrives with a tape of an early Fionna and Cake adventure. Ice King is enamored by "Fionna" and invites her to stay with him. At night Ice King watches the remainder of the tape where Fionna and Cake find a mummy only to learn that the mummy is really the Queen of Ooo.
Whispers While fishing, Finn and Fern encounter Sweet P who was running away from home after having a nightmare. Sweet P reveals that he has been having visions of a "whisper monster" trying to tell him he is evil. Finn and Fern decide to camp with Sweet P when they encounter the hand of the Lich that was cut off in "Crossover".
Three Buckets Fern reveals his ability to change his appearance to look just like Finn. Impressed, Finn joins Fern to a dungeon hidden away in a mountain. While there, Fern traps Finn in one of the rooms and reveals his plan to replace him. Finn finds out that his robotic arm can do a variety of things and drills his way out of the dungeon.