Jack Terry, a skilled movie sound effects technician, records audio for a low-budget slasher film in the lush Pennsylvania outdoors. One night, while capturing natural sounds, he unwittingly tapes a car accident when a vehicle veers off the road and into a creek. Rushing to the scene, Jack manages to save the female passenger, Sally, before the car sinks completely, but he's unable to save the car's other occupant, the driver who happens to be a prominent political figure. As Jack reviews his audio recording of the incident, he grows suspicious that the accident may not have been an accident at all, but rather a murder disguised as one, with the sound of a possible gunshot leading up to the car's tire blowout.

Driven by a strong sense of integrity and a suspicion of foul play, Jack becomes obsessed with uncovering the truth. He begins to piece together a dark political conspiracy, with his audio recording as key evidence. Sally, the surviving passenger, gets entangled in Jack's investigation, and together they delve deeper into a dangerous world of deception and treachery. As Jack's findings put him at odds with those who want the incident forgotten, he realizes the depths of the peril he and Sally face, being caught in the crosshairs of those who will do anything to keep the truth from coming to light.