The series is based on the famous best-selling novel "Red Dragon" and the movie of the same name. Will Graham (Hugh Dancy) is a special investigation consultant for the FBI and a crime analyst. Will has a special ability: he can restore the crime process based on clues at the crime scene. He is investigating a brutal serial murder case. The murderer is very cunning and leaves few clues each time. In order to solve the case, Will seeks help from the famous psychologist Hannibal Lecter (Mads Mikkelsen). During the investigation of the case, Hannibal, who is academically sophisticated and has a great personal taste, inspired Will and made him feel that he was one step closer to uncovering the true identity of the murderer. But after killing the criminal with his own hands, Will fell into self-blame and fantasy, and had to seek help from Hannibal again. Gradually, Will became more and more dependent on this respected and beloved doctor. However, the story seems to have just begun...