Criminal profiler Wen Yuan has seven unexplained prophetic images in his mind, and the first six have been fulfilled one by one in the cases he has handled. Before the seventh prophecy was revealed, a countdown prompt popped up on the computer. At the same time, the city bureau received a bizarre serial disappearance case. The victims had no connection with each other. The only thing in common was that they all received an anonymous letter before they disappeared. The envelope was printed with the same symbols as in Wen Yuan's dream. The countdown seconds were ticking, and the seventh prophecy was approaching in ways he couldn't predict.
