Ep 23. The Cooler

Finn and Jake are at the Ice King's castle when they realize that someone has been stealing his power crystals. They decide to investigate the palace and find out that the culprit is none other than the Ice King's brother, the Ice Queen.

The Ice Queen invites Finn and Jake to an ice party, and they accept, but they soon realize that the Ice Queen has ulterior motives. She wants to steal the Ice King's power crystals so that she can use them to freeze the entire kingdom. Finn and Jake end up in a heated battle with the Ice Queen, and they manage to steal the power crystals from her.

However, they soon realize that the power crystals are incredibly dangerous. The Ice Queen has been using the crystals to control the power of the ice, but the crystals are also causing her to become more and more unhinged. Finn and Jake worry that the crystals will just make things worse, and they decide to destroy them before anyone else can use them.

The episode follows Finn and Jake as they navigate dangerous territory to reach the "cooler," the place where the power crystals are kept. They face many obstacles, including giant ice cubes, hidden trap doors, and the Ice Queen's minions. Along the way, they also encounter a number of strange creatures, including a group of snowmen who have gained sentience and are now living out their dreams on a tropical island.

The tension continues to rise as Finn and Jake make their way closer to the cooler. They know that they're risking their lives, but they also know that they have to destroy the power crystals before anyone else can get their hands on them.

Finally, Finn and Jake reach the cooler and prepare to destroy the power crystals once and for all. However, they are ambushed by the Ice Queen and her minions, who are determined to stop them from destroying the crystals. Finn and Jake engage in a fierce battle, but they eventually manage to gain the upper hand.

Just as they're about to destroy the power crystals, they realize that destroying them will also destroy the Ice Queen. Finn and Jake are faced with a difficult decision - do they destroy the crystals and risk killing the Ice Queen, or do they leave the crystals intact and let the Ice Queen continue her reign of terror?

In the end, Finn and Jake decide to destroy the power crystals, even though it means saying goodbye to the Ice Queen forever. The episode ends with a bittersweet moment as Finn and Jake walk away from the cooler, knowing that they've saved the kingdom but also feeling the weight of the sacrifice they had to make.