A race of "succubus" that breeds human beings in the nursery, and human beings trying to eradicate them. After an eternity of time has passed since the two incompatible races began to fight, a "king" will be born who will end the battle.

For 500 years, people have been unable to enter “The Forbidden Continent” in the Southern Hemisphere. Mankind’s first successful voyage, the research ship “Pandora”, has returned. People from around the world gather to try and catch a glimpse; and Nayuta, the daughter of the Pandora’s captain, is also excited to see the creatures brought back from the Forbidden Continent. She happens to meet a mysterious young boy on Eden Island. Sen warns Nayuta “You don’t know the real reason the “Forbidden Continent” is forbidden”…what does Sen really mean!?