On the first day of school, a Chinese teacher committed suicide by jumping off a building. A red queen's card was stamped on the palm of his hand. The red card reappeared, leading to the tragic serial murder case five years ago. The senior police superintendent was involved in the suspicion of perjury, gangsters frequently visited the public security department, a strange virus appeared on the border of Yunnan, a large number of human poisons were imprisoned in the dark basement, and he thought he was in control of the overall situation but was already mired in quagmire. There is a bigger secret hidden in the complicated events and relationships...
