When BMO receives a distressing message from Princess Bubblegum, it becomes clear that something is terribly wrong residents from all the kingdoms have mysteriously vanished, and all signs point to the Ice King. Determined to uncover the truth, Finn and his best friend Jake set out on a journey to find and rescue everyone scattered across the realms.
However, the Ice King has fortified his domain with a powerful barrier, locking himself away from the world. To break through, the duo must recover mystical keys fragments of Simon's own power left behind. Only by gathering these pieces can they shatter the barrier, confront the Ice King, and free him from the madness inflicted by his enchanted crown.
The fate of the kingdoms and their friend rests in your hands. Will you save Simon before it's too late?