10 Years ago, the young and smiling girl was forced to accept a future destined to be tragic. Her charming figure and cold heart became the nightmare of the apocalypse... But this was not her real stage. In death, she experienced unprecedented relief and rebirth. Even if she had to face a new world, a new destiny, and a new war, she still had that person's existence and their existence in her heart. But this world belonging to the dead hides the truth that the world is heading towards the end of the world. Faced with this truth and this challenge, where will they, who were once human beings, go?