Ep 27. The Visitor

In Adventure Time season 6 episode 27 titled "The Visitor," Finn is visited by a strange visitor from outer space. The visitor turns out to be Martin Mertens, Finn's father, who has been missing for years. Martin arrives in a spaceship and crashes it into Finn's treehouse. He reunites with his son, but Finn is skeptical of his motives and questions whether Martin has changed his ways. Finn's doubts are confirmed when Martin steals the spaceship's power source and leaves Finn with the wreckage.

Finn is left feeling angry and betrayed by his father's actions. He turns to Princess Bubblegum for advice and she suggests that he should try to forgive his father and give him a chance to explain himself. Finn resists at first, but he eventually comes around and decides to visit Martin in space.

When Finn reaches Martin's spaceship, he finds that his father has created a miniature world inside the ship using advanced technology. Martin gives Finn a tour of the world and explains that he's been living inside it for years, trying to create the perfect world for his son. Finn is touched by the gesture, but he remains skeptical of Martin's intentions.

Martin reveals the reason behind his disappearance and abandonment of his son years ago. He had stolen a valuable gemstone from a group of aliens, which had lead to his ship being pursued by them for several years. When he finally reached Earth, he had wanted to hand the stone over to his son, but he hadn't expected to find Finn growing up and being taken care of by others. Feeling ashamed of his actions, Martin had decided to live inside the miniature world and create the perfect world for Finn, using advanced technology.

Finn is conflicted by Martin's explanation, but he starts to understand his father's intentions. Princess Bubblegum aids in the resolution of the conflict and encourages Finn to reconcile with his father. They both wave goodbye as Martin's spaceship blasts off into space, leaving Finn with a renewed sense of peace and a newfound understanding of his father's actions.

Overall, Adventure Time season 6 episode 27, is an emotional and thought-provoking episode that delves into the complex relationship between a father and son. It raises questions about forgiveness and letting go of the past, and demonstrates the importance of communication, empathy, and understanding in resolving conflicts. The episode is a masterful blend of humor, action, and heart that will leave viewers feeling touched and satisfied.