Part 3/10:
Encouraged by Jake's determination, Finn pitches in, and together they amass a cartful of the precious gems. However, Jake, caught up in his excitement, carelessly tosses the diamonds into a river of lava, leading to Finn's frustration. This prompts Finn to salvage one diamond and seek advice from Marceline, the Vampire Queen, on how to utilize it. It’s ultimately Princess Bubblegum who lends a hand, helping Finn create a fireworks rocket to elevate their spirits.