Film censor Enid takes pride in her work, seeing herself as a guardian of unsuspecting audiences amidst the ‘Video Nasties’ panic of the 1980s. The gore-filled features she hacks away at cause her no concern, but she has a secret that may be the reason: she’s haunted by the traumatic childhood loss of her sister, a long-abandoned cold case disappearance that she’s tried hard to forget. But when she’s enlisted to watch an eerie film by a mysterious exploitation filmmaker, its content aligns far too closely to her sister's vanishing. Enid resolves to unravel the puzzle behind the film and its enigmatic director – and her quest soon begins to blur the lines between fiction and reality in terrifying ways.