Keep Sweet
“Keep Sweet” concerns the conflicts in two towns on opposite sides of a state line. The area of Hildale, Utah, and Colorado City, Ariz., was settled by members of a breakaway faction of the Church of Jesus Christ of Latter-day Saints that continued to practice polygamy after the church had banned it.
Starring Don Argott
It's a crime and documentary movie, and has a rating of 6.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Spain.