Episode Title:
Islands Part 1: The Invitation.
Episode Description:
A large robotic craft arrives searching for Susan Strong. However, when it reaches the Bubblegum Kingdom, Jake destroys it with his fist. Princess Bubblegum examines the wreckage and discovers its location of origin leading Finn wanting to discover its creators. Before leaving, Finn tells Fern to stay and look after Ooo for him. Princess Bubblegum, Marceline and Fern see Finn, Jake and Susan off on their voyage.
