Finn is officially over Princess Bubblegum, but his new crush on Flame Princess (FP) is literally burning him. Convinced that she isn't "evil" but just "passionate," Finn and Jake track her down to the Goblin Kingdom, where her chaotic energy is causing accidental destruction.
To get close to her without turning into a crisp, Finn and Jake enlist to build flame-retardant battle robots. However, the plan backfires when FP realizes that the water and foam Finn uses to protect himself actually cause her physical pain. The episode culminates in a tearful misunderstanding: FP assumes Finn is a "water elemental" because he creates water (tears), and she decides they can never be together because they will only hurt each other. Why This Episode Matters [S4E1] Hot to the Touch
: Critics from The A.V. Club noted that FP is the "perfect element for a hormonal teenage princess," representing how intense, uncontrollable emotions can burn everything in their path. Finn is officially over Princess Bubblegum, but his