New police officer Qin Che's first case on the job encounters a bizarre murder in the south of the city. The deceased was a mysterious tomb robber. Only vague clues about a black car and a bronze fragment with ancient animal patterns were left at the scene. The touch of the fragments triggers strange illusions - the dark corridors of the Qin and Han Dynasties, the prisoners in ocher clothes who look exactly like Qin Che, the faint blue light of the ancient underwater mirror, and the secret of the "mirror world" has been entangled with him ever since. As the investigation deepens, clues point to antique shop owners, high-level insiders of the city bureau, and even involve scholar Mo Yuan's crazy plan: to collect the fragments and seek immortality through the "Mirror Realm". Qin Che gradually learns that he is the key "key" to unlocking the "Mirror Realm". In the collision between modern criminal investigation and supernatural forces, he is involved in a puzzle intertwined with ancient and modern times - the energy decisive battle of Mirror Lake, an accidental crossing of the forbidden area of Lishan Mountain in the Qin Dynasty, and the secret coveting of Zhao Gao's forces. Clues in dual time and space are intertwined, and the mastermind behind the scenes is still unknown. Is the "Mirror Realm" a cage for dead souls or a door to eternal life? Qin Che's life experience and the secret of the two-thousand-year-old mirror are gradually revealed in the game of life and death, and the truth is far darker and unpredictable than imagined.
