After Flint returns the final relic, it is set in place and the machinery of the tower is activated. Mephisto reveals that there isn't a lost treasure of Varuna and that he had built the tower two thousand years ago in order to calculate the coordinates of the nerve-center of the planet. A wizard named Lumiere, however, prevented Mephisto from entering by sealing the tower. Mephisto then inserts a key into the Baron, turning him into a mechanical monster. After Flint defeats the monster, Baron Diaz returns to normal. Outside of the capital, Mephisto raises his Star Key, a giant key-shaped structure, out of the sea. His intention is to use its power to mutate the planet and take control.