At long last, Finn was granted the gift of maturity, but a gift received out of pain and labor. Now, dedicated completely to the needs of the many rather than his own doused heart, his heroic skills have been called upon to aid the land of flames. How far will he go to protect the Fire Kingdom, and will he be willing to give himself one last chance with its ruler?

Now 17, Finn the Human has become a mature hero of Ooo. However, repressed feelings for Flame Princess are desperately trying to tear him apart, and the fiery girl knows his pain. As an ancient evil rises to consume all existence, a final chance will present itself to Finn and his friends to not only stop the madness but finally unite a couple struggling for each other's love.

(Finnceline) Marceline Abadeer has been through a lot throughout her "life" and could never seem to catch a break. Then Finn the Human came along. This unlikely couple will endure many trials and tribulations on their journey to figure out if they truly are compatible and if love is even worth it.

With Cinnamon Bun's death the Fire Kingdom lost some of its shine, but amidst the ashes of his passing a new face rises to ease their sorrow. Flame Princess calls her "daughter", and her subjects have accepted her as their new young princess. Finn however, is afraid to ask. Could the girl in FP's arms be hers & Cinnamon Bun's baby? True or not, the child needs a father, right?

Finn and Marceline have been through a lot, but nothing can prepare them for the trials of a relationship. They'll face powerful foes such as jealousy, uncertainty, and even tension between themselves. Can they stay together long enough for their love to blossom? Or will their newfound feelings be shredded before their very eyes? And who are the "Holy Ones?" Sequel to Rescue.