In a desperate attempt to seek justice for the murder of his 14-year-old daughter, Mr. Simmons takes it upon himself to capture all those who he feels might be responsible. Interested in interrogating them undetected, he monitors each suspect trapped in a separate room by simultaneously keeping watch over them via a computer screen. Having roped in his oldest daughter and her best friend, Mr. Simmons won't let anything stop him from finding his daughter's killer.