This story begins a thousand years ago. At that time, Penglai was not a fairyland, but it was not unknown. Seeing that the top of Penglai Mountain is covered with miasma all year round, some old people say that there are very ferocious monsters living on the mountain that devour humans for a living. Some people say that the mountain is covered with rare and rare herbs, which can cure all kinds of diseases and make people live longer. Therefore, the immortals set up a barrier to prevent mortals from stealing food. In short, for thousands of years, no one has been able to break in alive. However, from the moment she woke up, the gears of fate turned again...