The human race is divided into three races. "Nut," which is extremely strengthened, "Alma," which continues unique blood, and "Haman," which coordinates the two. Alma's blood, which lives in the desert, is used to treat Noot's photosensitivity in the west of the continent. One day, while struggling to return to the Seokha Desert, where he was hunted by Alma and fell to an unfamiliar land, he encounters an unknown Eden. The companion, which began with intimidation, is longer than expected, and Eden, who interferes with Seok-ha's return, becomes suspicious....