After losing his mother to a murderer and getting into an accident himself, Lee Shin-hyuk, a young boy, spends 15 years gaining knowledge in a mysterious space where he can learn and absorb countless subjects.
Then, he suddenly wakes up from his coma just one month later in the real world. Armed with the knowledge and abilities he acquired over those 15 years, he becomes a genius profiler who confronts threats to society and helps bring justice to the dead.
This is the story of a profiler rising to the very top of his field.