Shay and Colette Butler are murdered in their home with three of their five children home. Their oldest son Gavin was at a sleepover at his cousins along with his sister Emmi. Brock and Daxton were home at the time, but had stayed asleep during the murder. That leaves the Butler's oldest daughter Avia, she had been her parents room asleep on an air-mattress because she had been sleeping in there because she was sick. She is the police and the FBI's sole eyewitness, but what happens when you're primary eyewitness has turned mute.