"Sir, as a criminal psychologist, do you have any opinion on the title 'Shenyin' given to you by others?" In the cafe, the 'boy' bathed in the sun retracted his gaze from the window and said, "No." The cold tone stopped her from looking at him. She thought that this guy was really difficult to deal with, but she didn't know that it was this unexpected interview that made her life ups and downs, but also extremely exciting. In fact, this is the story of the stupid detective learning to love.