On Lin Yi's 18th birthday, he discovered that he was a beast, and he thought he would just leave. But when he came back to his senses, Lin Yi found that he was still alive. Not only was he unscathed, he had even returned to the past. At first, Lin Yi thought that all this was his hallucination. It was not until it reappeared that Lin Yi finally discovered that the person sitting in front of him was actually a monster disguised as a human. After many backtrackings, Lin Yi gradually discovered the truth of the world.
