Robert (Patrik Karlson, The 100-Year-Old Man Who Climbed Out the Window and Disappeared), an amateur sound engineer, spends hours in in his basement full of wires and oscillators experimenting with sound waves. After he finds a frequency that allows him to hypnotize people, he lures his attractive new neighbors into his house to act as test subjects for his discovery. Under Robert’s control, the oblivious couple is manipulated into increasingly elaborate role-playing games that allow Robert to indulge in his most megalomaniacal fantasies. But when investigations into the suspicious death of his wife threaten to bring an end to his demented operation, Robert must use his scientific breakthrough on a much larger scale in order to continue his warped research.