Enid Baines (Niamh Algar) is a film censor in Margaret Thatcher’s Britain. The explosion of video in the early 1980s has resulted in increasing concern over the content of alleged ‘video nasties’ and so there is increased pressure on censors to ensure they are doing their job. But Enid, fastidious and dedicated, is up to the job. At least, she is until she sees the latest by local gonzo horror filmmaker Frederick North. His producer (a wonderful Michael Smiley, evincing the same casual threat he brough to brilliant effect in Ben Wheatley’s films) oozes slime and threat in equal measure as he encourages Enid to enjoy the film. But her half-forgotten memories of a family accident and the death of her sister trigger something in her.