Modern young man Xu Mingchuan falls into a dream due to an accident and travels to the Peach Blossom Spring written by Tao Yuanming. Time has stood still here, and residents are still living in a utopia that was created in the late Qin Dynasty. He got acquainted with the mysterious hermit Liu Xuan, an alchemist who knew the secret history of the Qin and Han Dynasties, and gradually discovered that the Peach Blossom Spring was not a simple paradise, but a "gap in the world" maintained by ancient formations.
As they got along, Liu Xuan revealed to Mingchuan the truth about Qin Shihuang's quest for immortality, the connection between the Peach Blossom Spring and "The Classic of Mountains and Seas", and why he lived in seclusion here. Mingchuan is obsessed with the purity here, but he also discovers in ancient books the terrible prophecy that the Peach Blossom Spring needs "sacrifice from outsiders" every hundred years to maintain...
When he wanted to stay, Taohuayuan began to reject him, and Liu Xuan's attitude changed. At the same time, Mingchuan was unconscious in reality, and doctors found that his brain waves were abnormally active, as if he was experiencing a long life in another world...
