Have you ever thought that there is a real world hidden deep in Bo Yun's treacherous dreams? Have you ever thought that behind every catastrophe reported by the news, there is an unknown truth buried?… …On the night of his eighteenth birthday, Leo had a dream. In the dream, there was a dark dungeon and a bloodthirsty monster. He picked up the iron sword beside him, and cut off the head of the monster. Then, he woke up. Standing In front of the mirror in the bathroom, the corners of his mouth slightly raised. Because in the mirror, his eyes were scarlet and shining like the monster in the dream.