Penglai Island is said to be the island of gods in ancient times. Qin Shihuang sent Xu Fu and three thousand virgins to look for Penglai to find a way to live forever. Human beings, monsters and demons live on the island, and they live in harmony and freedom. To prevent the demon from getting hurt, the witch uses spells to hide the island of Penglai, appearing only once every 50 years with thick fog. However, the evil Sidou God took advantage of the weak boundary of the island to sneak in, pollute the vibrating kiln, and mercilessly rule and slaughter the islanders. Fifty years before Gome arrived in the warring States period, Invyasha and Kikyo boarded Penglai by boat and encountered the four fighting gods. During the battle, Invyasha's power was sealed by the four fighting gods. Fifty years later, Penglai Island reappeared. Half demon A Lan took the opportunity to escape, was chased and killed by the four fighting gods all the way, and finally was saved by Invyasha and his party. In order to save the islanders, Invyasha, Gome and others decided to step into Penglai. On the other hand, Alain's sister, shallot, decided to jump into the kiln to save the lives of his brothers and sisters.