Floating in a certain ocean is an island called "EGU Island." The sole entertainment on this island is listening to the songstress, "End of the World." Day after day, the islanders are enchanted by her singing. However, this tranquil time is shattered in an instant. Since the disappearance of the songstress, the island has been filled with "anger," "doubt," and "anxiety." Various thoughts and intentions begin to stir...