In Boston, homicide detective Frank Shaw is chasing a criminal when he is hit by a car. He has a sensible hearing loss and eleven months later, his doctor tells him that he will become deaf in a few months. While the devastated Frank is drinking in a bar, his former partner and now narcotics detective Doug Slater asks Frank to help him in an investigation. He needs to interview Ava Fremont, a deaf witness to the murder of a drug dealer, but the ASL translator is on vacation and not available for one month. Frank goes with Doug to Ava's apartment in an almost empty residence building and they learn that the residents have been evicted since the owner wants to renovate the building to rent the apartments for a higher class. Frank learns that Ava is a former drug addicted and finds Narcan in her bathroom cabinet. Ava delivers her cellphone to Doug with the footage of the murder, and they leave her place. While driving back home, Frank notes that he has forgotten his cellphone at Ava's apartment. He returns to her home and finds that a group of men led by the black Lynch is hunting her down. Soon he learns that Lynch and the other men are corrupt cops that want to simulate an overdose in Ava to kill her. Further, Ava is not drug addicted and used drugs only when her grandmother died, and she was depressed. Now their only hope is to find a telephone and contact Doug Slater to save them.
—Claudio Carvalho, Rio de Janeiro, Brazil