This novel is a science fiction epic with a grand structure, a unique world view, and ups and downs of plot. The book consists of ten volumes and completely tells the tragic journey of the protagonist Lin Yuan from an ordinary person who was passively involved in supernatural events in order to save his relatives to a dimension guardian who shoulders the mission of the survival of civilization and ultimately self-sacrifice. The work combines urban fantasy, space opera, Cthulhu-style cosmic horror and other elements to build a logically consistent and imaginative world.