The brilliant neurobiologist Sin Ha Ru grew up in a family of scientists. He is wealthy, self-assured, and unwavering in his beliefs. The experienced detective Gym Myeong Se appears gloomy and struggles with social interactions, which has earned him a less-than-stellar reputation. The shy Sol So Jeong explores the use of hypnosis in criminology. These three experts will have to come together and overcome their differences in order to investigate the mysterious death of a popular singer.