At the Tavern, they interview , who claims she saw a "shimmering shadow" stealing all the kingdom's batteries. Finn uses his "Dandified" logic to deduce that the culprit isn't a ghost, but someone using high-tech invisibility.
Finn defeats the Glitch-Gunter by "unplugging" the logic of the world with a well-timed joke. Everything snaps back to reality. PB returns to her physical form (though she’s a bit grumpy about her molecular structure being jumbled), and the Candy Kingdom returns to its sugary glory. Adventure Time Finn and Jake Investigations PSN
A trail of "Digital Glitch-Goo" leading toward the Candy Tavern. At the Tavern, they interview , who claims
It turns out BMO wasn't the villain—he was the victim! (empowered by a stray magical circuit board) had kidnapped BMO to use his processing power to create a "Virtual Ice Kingdom" where Gunter could be the king and everything is made of digital kittens. The "curdling" was actually a side effect of the machine's cooling fans blowing magical exhaust over the Candy Kingdom. Everything snaps back to reality