We find Fionna living in a non-magical, Simon Petrikov-created universe. She works a dead-end job, she’s bored out of her skull, and she desperately longs for the epic adventures she’s read about in Simon’s old fanfic. Cake, meanwhile, is just a normal house cat. The world is grey, mundane, and suffocating.
You’ve ever felt like your life lacked magic. You’ve ever read a fanfic better than the original. You’re ready to cry about an old man with a crown. Adventure Time- Fionna Cake
Let’s dive into the multiverse, the mundanity, and the magic. For the uninitiated: Fionna the Human (voiced by Madeleine Martin) and Cake the Cat (voiced by Roz Ryan) were originally characters from Ice King’s fanfiction. In the original series, they were imaginative stand-ins, existing only in the mind of a lonely, deranged wizard. We find Fionna living in a non-magical, Simon
The series argues that happy endings are a lie we tell children. For adults, endings are just new beginnings that are often less interesting. When Fionna accidentally breaks her universe, she isn’t unleashing chaos—she’s unleashing potential . Danger is re-introduced to a sterile world, and paradoxically, that danger feels like relief. On the surface, Fionna is a reboot of Finn: spunky, sword-wielding, impulsive. But the show actively dismantles that trope. Fionna is not a good hero. She gets her friends killed (temporarily). She ignores warnings. She throws tantrums when reality doesn’t conform to her expectations. The world is grey, mundane, and suffocating
Fionna isn’t a hero. She’s a fan. And fans, as we know, can be messy, entitled, and desperate for a story that isn’t theirs. The original Adventure Time was about growing up. Finn the Human learned about loss, love, and responsibility across ten seasons. Fionna & Cake is about what happens after you grow up—the quarter-life crisis where you realize the story is over and the credits didn’t roll. 1. The Horror of a “Happy Ending” The show’s antagonist isn’t a Lich or a Vampire King. It’s the very concept of narrative closure . Simon Petrikov (formerly the Ice King) is now cured, living in a world he designed to be safe. But safety is suffocating. He has PTSD from his century as a mad king. Fionna has depression from her lack of purpose.
You need your cartoons to be simple. You hate multiverses. You think “BMO” should have been the only spin-off.