Luna decided to go back in time to stop the headmaster's plan. She activated the amulet and traveled to the academy ten years ago. There, she saw the young headmaster and discovered he was once a kind person. What made him become like this? Luna decided to find the truth.
Luna discovered the headmaster turned evil because a dark magic book corrupted his mind. He found it during an expedition, and it contained secrets of immortality. Shadow said: "We must destroy that book!" Luna decided to destroy it before the headmaster could find it.