Links: Wikipedia, IMDB (6.5).
The concept is "nostalgic 1980s satanic ritual abuse". For the first third of the film, the movie is patting itself on the back for how carefully it reconstructs the trappings of the target era. After the "plot" begins, it became so dull I couldn't finish watching it. From what my friends described of the ending, it followed one of the exactly two paths I had imagined for it. Sigh. Score: 1 star out of 4.