Chen Wen just wanted to be a librarian quietly and have nothing to do with the world. His synesthesia allows him to "see" the colors of words and "hear" the melody of images. Although this troubles him, it also constitutes his unique world. Until one day, when he was sorting out an ancient book that no one cared about, he saw a "bleeding" text and heard the crazy roar in it - he accidentally came into contact with a "memetic virus" that could distort reality.
Since then, he has been involved in a battlefield that has been hidden for thousands of years. Here, a melody can lead people to the abyss spontaneously, and a piece of graffiti can cause the entire street to physically collapse. The "Night Watch" organization that fights against these abstract plagues discovered that Chen Wen's synesthesia is the most powerful weapon to perceive and fight against these conceptual pollutions.
He must now learn to weave classic literature into a shield, use mathematical formulas to forge blades, and fight to protect the last boundary of reality deep in the collective subconscious of mankind. Because he discovered that the cult leader who was trying to "unify" the consciousness of all mankind was actually his most respected mentor who had "passed away".