The planet has stopped rotating. Shrouded in endless darkness and overrun by monsters, the world can only be restored by winding the Planet Key—and to do that, the Five Machina Mages must conquer the Four Towers and the Deities within. Young Machina Mage Estra sets out with her Guardian to meet the challenge, encountering the Three Shadows of Darkness and the mysterious Dragon Skull Warrior along the way. Whether she can survive every trial and bring light back to the world is the question the game builds toward.