The boundary between world for the afterlife, where reincarnation begins and the human world is Luochuan. For the souls of the dead that wan tot reach the afterlife, they are guided by the ferry god, Xunya. One day a green snake fell into the waters of the Luochuan and was rescued by the great dragon Xunya. Once revived, the green snake made an Inn for the people passing the Luochuan and began staying there — waiting for the day when the precious pearl would once more reappear and she would be able to save her sister. But at what cost? (Source: Soju at MyDramaList)