In the largest and oldest library in the capital of Huaxu Dynasty, a kind and honest young man and his grandfather, an old servant, depended on each other. Even though he has a humble status, he has countless books to accompany him, which is also a lot of fun. An inadvertent book theft case set the young man on the road to cultivating immortality... During the endless journey, he began to think, why should he practice? Where is the end point of spiritual practice?