The demon mornarch is in a small cave in the middle of nowhere. The only way the demon god can enter the human realm is to have a human host. The last time he visited him, he was on the south sea. He already knew that the mission was failed. The small cave must have a sacred treasure in addition to the other treasures that the demon king bestowed upon him. He thinks they should join forces with the island and the cavern. The imperial envoys come to the ancestral house of the clan chief and his wife and welcome the group. They are from the Dongning mansion. The elder son of Donganing is the student of the master of the mansion. He welcomes the group and tells them that the mansion will be their future home. He tells the group that he still has confidence in his secret weapon.