Legend has it that there are two types of demons, one is formed by self-cultivation, and the other is formed by being influenced by certain things, called spirit demons. And their stories of how they were inspired by this are all heart-stirring and tear-jerking. There is a demon tower on Demon Tower Mountain, which is used to imprison some spirit demons who are addicted to the human world. However, as time changes, the demon tower has become a gathering place for spirit demons. Many demons come here because of its reputation. According to legend in the demon world, there is a cave inside the demon tower, which is called a fairyland in the world. And what interesting stories will happen to the spirit monsters living inside? What is the heart-stirring story about their transformation?