Nishi, the guardian of the soul realm, and Hu Zhi, who is obsessed with carrying his daughter "He", have been connected by the flower of the other side since ancient times, and have been involved in a thousand-year cycle of reincarnation. The two went through the tombs of the Shang and Zhou dynasties to break the vine corpses, dismantle the soul-eating lanterns in Chang'an of the Tang Dynasty, the soul-eating water in Xihu Town of the Song Dynasty, the lanternmen who retreated to Yuangui City, and the Ming palace to search for the souls of the grains, and finally returned to the soul realm with the souls of the grains on a boat in the late Ming Dynasty.
After three thousand years of fighting against the lampkeepers who coveted the "heart of the other side", their obsession changed from "saving the harvest" to "protecting each other". In the end, the hostility of the flower on the other side of the soul realm faded, and the three of them guarded each other to protect the lonely soul and find its home, thus resolving the thousand-year catastrophe on the other side.
