Lingshuang and her adopted brother Yeze investigate the cause of their parents' death. One becomes a killer and the other becomes an agent. They investigate separately. A killer organization collides with the agent. Lingshuang commits suicide to protect her younger brother Yeze. Unexpectedly, she travels to other worlds and transforms into a girl. She survives in a world with both supernatural powers and zombies, meets all kinds of people, and uncovers the final conspiracy. (This work is a novel, the content is long, please read it patiently)