Gao Fan, a young man who works the night shift at a funeral home, has a gloomy and paranoid personality and has been diagnosed with severe obsessive-compulsive disorder and delusional disorder. Because of a strange sleepwalking, he accidentally solved multiple puzzles on the secret box of the "Philosopher's Stone", the treasure of the museum in the neighboring city, and was admitted to the "Fifth Archives Division" of the country's mysterious agency. His yandere symptoms, after receiving the blessing of the mysterious "analysis system", turned out to be a powerful tool for analyzing the extraordinary laws of supernatural objects. The tower not only symbolizes his lonely spiritual world, but also a metaphor for the forbidden land leading to the truth. His first task after joining the company was to analyze a Western magical relic code-named "The Weeping Holy Grail" that had been sealed since World War II. During the analysis process, Gao Fan gradually came into contact with the deadly mystery left by the ancient Knights Templar in the West. Facing this Oriental alien, the hidden power of the Knights began to obstruct him crazily. Gao Fan must use his extremely paranoid logical framework to dismantle all the puzzles in a yandere manner, kill the enemy with his logic, and carry the flag of China's fifth dimension.
