The story is set in a modern metropolis and tells the story of Lin Xunyi leading a reasoning team composed of psychologists, forensics, network information experts, legal consultants and trainee detectives to solve real and bizarre suspense cases. Each volume independently launches a round of case investigation, while the main line runs through the growth of team members and the evolution of trust within the team. Each member has a different story line, and the dark forces behind the case gradually emerge, revealing the complexity of real society, the gray areas of human nature, and the struggle for justice.