The "Black Crow Case" that shocked the country ten years ago became a mystery, and the only surviving witness disappeared. Now a corpse was found in the old criminal case archives, with undisclosed symbols engraved on the wrist - and Pei Jue actually opened his eyes after being in a coma for three days and remembered all the erased details. Jiang Liaoyuan, the veteran of the police station, was ordered to reopen the cold case, but he was shocked to find that Pei Jue was not a witness, but the scapegoat who was framed back then. The two confront each other behind the rusty iron gate. One is a living witness carrying a stigma, and the other is an old policeman who holds the truth. When the seventh dark figure monitoring the blind spot surfaced, Pei Jue's memories began to flow backwards, and Jiang Liaoyuan's notebook had already written his name.
