In the bustling heart of Paris, two detectives of vastly different temperaments are partnered together at the renowned International Detective Inc. Dein Dupont, a seasoned, cold, and solitary detective, harbors a painful past—his mother’s unsolved murder—driving his relentless pursuit of justice. The agency assigns him to mentor a new rookie detective YOU, much to his disapproval. Initially resistant and irritated by the rookie's mistakes and noisiness, Dein frequently clashes with his partner,