In a world where privacy has become an illusion, a recording expert, Harry Caul, is a solitary professional obsessed with his work. This genius of electronic espionage is a master at capturing other people’s conversations without anyone noticing his presence. However, his life takes an unexpected turn when he accepts a commission from a mysterious client who asks him to record a conversation between a young couple, seemingly harmless. As Harry analyzes the material, he begins to obsess over the content of the recordings, glimpsing a plot that could have devastating consequences for those involved.
Caught between his sense of duty and his concern for people’s privacy, Harry confronts his own morality. More than a story about espionage, it becomes a disturbing introspective journey in which the lines between the observer and the observed blur. With each new discovery, his inner demons resurface, causing him to question whether he is truly helping or perpetuating his own isolation.
The atmosphere of suspense, the masterful use of sound, and the subtle performances create an emotional climax, leaving the audience with more questions than answers. In the end, Harry’s struggle to find the truth leads him to a dark place where ethics and loneliness intertwine, and his final phrase resonates with an almost sinister echo, reminding us of the shadows that lurk in an increasingly connected world.