Ep 18. Susan Strong

In the Adventure Time season 2 episode 18 named "Susan Strong," Finn and Jake encounter a group of mysterious humans who live underground. They claim to be survivors from the surface world and are led by a young woman named Susan Strong. However, they are unable to speak properly and communicate mostly through grunting and hand gestures.

Finn tries to communicate with Susan and her group, but they don't seem to understand him. Despite Finn's attempts to befriend them, Jake is skeptical of their intentions and suspects that they may be enemies.

As they explore the underground world, Finn and Jake find out that the humans are in danger of being attacked by a strange creature known as the "Freak Deer." They agree to help Susan and her group fight off the creature and save their home.

Along the way, the group faces various obstacles and challenges. Finn and Jake must come up with creative solutions to overcome these obstacles and defeat the Freak Deer.

As they face the Freak Deer, Susan is revealed to have a surprising secret that puts her and her group in even greater danger. Finn and Jake must rally to protect them and save the day.

Overall, "Susan Strong" is a thrilling and action-packed episode that explores themes of friendship, trust, and bravery. It introduces new characters and expands the Adventure Time universe in exciting ways. Fans of the series are sure to enjoy this exciting and unforgettable installment.