An old female detective named Bai Yu, in an accidental coincidence, exchanged souls with her idol, the “national husband” Great Wall, and was involved in a murderous, thrilling serial murder and disappearance.
When the detective of the “leftover woman” was given to his idol, the chance was to be interchanged with the idol soul and forced to be involved in a strange case. In a sudden car accident, the white dragon and the soul of the Great Wall exchanged their bodies. The two had to continue to live as the other person and look for a way to exchange. In the process, Bai Bai was strangely missing. When the Great Wall searched for its trail, he gradually discovered the flaws in the serial missing and suicide cases, and together with his partner, Chu Xing Yun, unveiled this bizarre case.