Set in 1990s Scotland,The Nasty tells the story of teenager Graeme, his imaginary friend, Ennis, and their group of corporeal friends, the Murder Club. The Murder Club meets regularly at their local video store Monster-Dome to share their passion for horror movies. Monster-Dome’s owner Deb is a sort of patron to the group. She provides them with the space and snacks to watch the movies.
The Monster-Dome is in financial trouble, which means the club may lose its hangout. Deb has an idea though. She’s gained possession of a VHS tape of "The House of Creeping Flesh," a rare “Video Nasties” film. The “Video Nasties” is a 72-film collection of the world’s scariest movies. They are also rumored to be cursed. Most of these movies have been destroyed, making "The House of Creeping Flesh" an even greater accomplishment.
Deb’s plan is to revitalize her store by inviting a renowned horror convention to the town and debuting the film. When the tape is eaten by her VCR, Graeme proposes the group make their own horror movie in its place. Ennis somehow becomes corporeal too and becomes the homicidal monster in their movie. This is when the trouble starts.
Though I felt it was a little oversimplified, "The Nasty" effectively addressed the changing social dynamics that come when people and places grow older. This includes social norms (I didn’t mention that the group also must tussle with a moral decency activist), places like your local video store, and personal growth.