Five years ago, Lin Yingdeng disappeared and he lost his only sister. Five years later, 21-year-old Lin Qixing was attacked by a young man at night when he was returning home from work at night, and was told that his sister was still active in the world. A sudden knock on the door caused him to be abducted by a man. After traveling over the mountains and ridges, he came to an old mansion. He met a big boy who could be called a super otaku. They met again and again. What did their meeting mean? He never thought that his world view would gradually collapse due to this encounter. Facing a world he was unfamiliar with, where would he go?