Ep 2. Fionna and Cake and Fionna / Ketchup

Forged in a fireside chat with Bubblegum, Fionna and Cake are back in Adventure Time season 13 episode 2, titled "Fionna and Cake and Fionna / Ketchup". In this two-part episode, Fionna and Cake have to deal with a number of different issues, including battling against a flood of ketchup, meeting up with some of their friends, and trying to find a cure for a mysterious ailment that's affecting everyone in the Land of Ooo.

Part one of the episode, "Fionna and Cake and Fionna", follows Fionna and Cake as they are summoned to the Candy Kingdom by Princess Bubblegum. When they arrive, they discover that Bubblegum has created a dimensional portal that will allow them to travel to an alternate dimension - one where they exist as male counterparts named Fionna and Cake. However, things take a turn for the worse when they realize that they're not the only ones in this alternate dimension, and that they're being pursued by a group of malevolent figures who are intent on their destruction.

In part two of the episode, "Ketchup", Fionna and Cake find themselves dealing with a rather unusual problem - the Land of Ooo has been flooded with ketchup. As they set out to try and discover the source of this odd occurrence, they run into many of their old friends, including Lumpy Space Princess, Ice King, and Marceline the Vampire Queen. Together, they work to uncover the truth about what's causing the ketchup flood, and find a way to stop it before it's too late.

Overall, Adventure Time season 13 episode 2 is an exciting and humorous installment that will delight fans of the show. Between the clever writing and the stunning animation, it's easy to see why this beloved series has maintained such a dedicated fanbase over the years. Whether you're a longtime fan of the show or just tuning in for the first time, "Fionna and Cake and Fionna / Ketchup" is an episode that's sure to entertain and delight.