Karlheinz believes his Eden Project has finally succeeded and begins preparing to pass his power to a chosen successor and fade from existence. His longtime friend and chess partner Socrates is not convinced the chosen pair are ready — and decides to test them. He traps the brothers and Yui in a fabricated world with their memories erased, divides them into three rival families — Orange, Scarlet, and Violet — and sets them against each other in a battle to the death for the title of Supreme Ruler. At the center of the conflict is the legendary Sleeping Princess, Eve, whose appearance in the church the legend foretells. For anyone to return to the real world, the love between Adam and Eve must prove genuine under impossible conditions.