Throughout the 1980s, infamous serial killer Leonard Lake went on a murder spree in which he targeted, kidnapped, robbed, and killed almost 25 people. When a woman enters Lake's compound and seemingly disappears, Sonia, the only survivor of Lake's killing spree, teams up with a private investigator to help locate her, and in the process, Sonia recounts the horrors of the house where Lake and his accomplice would force her to videotape their killings.