Baekyahaeng plot
A man is murdered shortly after his release from prison. Detective Dong-su Han investigates the case, which leads him to an unsolved murder case from fourteen years ago. Meanwhile, Mi-ho is engaged to a director of a large international company. The director's assistant is asked to investigate Mi-ho's background. The latter discovers that Mi-ho's mother was the prime suspect in an unsolved murder case from fourteen years ago. The assistant also notices that a man, Yo-han, is always close to her. Dong-su Han is convinced that Yo-han has something to do with the recent murder case and he discovers the relationship between Yo-han and Mi-ho. As more crimes follow, he frantically tries to uncover the truth.