Finn's been getting these dreams. Where will they take him?

Deaths of Princesses around Ooo have distressed many people, Finn goes to a distant wasteland to apprehend the killer, but what he finds out there may shock him. He risks his life, to protect his family, protect his friends, protect the remaining princesses, but most of all protect Flame Princess. However, Fionna sure is making it hard to think about Flame Princess.