The protagonist Lin Yu was originally an ordinary person who was obsessed with history, but accidentally traveled to a parallel world. The technological level of this world is similar to that of modern Earth, but ghosts are rampant everywhere. They haunt cities and villages at night, triggering various supernatural events and bringing great panic to human life. Although there are ghost control organizations in various countries to deal with it, due to the lack of a complete underworld system to manage ghosts, the ghost problem has never been completely eradicated, and the world has fallen into a state of chaos and fear. Fortunately, Lin Yu was bound to the "Yinsi System" and started his legendary journey.
