This one of only three Brazilian "pornochachadas" (basically delirious combinations of wild telenovela soap opera and softcore porn) to be legitimately released in the English language. I don't know that it's the most outrageous, but it's definitely the least socially redeeming. There are no social messages here, just flat-out, unapologetic exploitation.
The plot involves a trio of criminals who run across a porno movie set and inflict abuse and humiliation, mostly of the sexual kind, on the cast and crew. It sounds like "Last House on the Left", but the victims in "Last House on the Left" were sympathetic. These characters are completely un-rapeable because they're sexual caricatures, who are having non-stop hot sex before the criminals show up and are only going to incorporate the three miscreants into the general hedonism. You simply CANNOT rape and humiliate these people because they obviously enjoy every minute of it. That may sound sexist or misogynist, but one of the willing (and enthusiastic) rape victims is actually a young pretty-boy male who gets forcibly sodomized by one of the bi-curious criminals. This strange bit of homoeroticism gives this a distinctly Brazilian flavor, which sets it apart from an Italian film or a Japanese "pink" film, both of which delve into similar very un-PC territory, but are much too homophobic to indulge in something like this.
One reason to seek this out (besides enjoying the sensation of your lower jaw regularly hitting the floor) is Helena Ramos, the hottest woman and by far the best actor in this thing. She would go on to star in a number of other "chadas" like "The Chick's Ability" and "Mulher, Mulher" and (although she was much less prolific) I consider her the Edwige Fenech of Brazil. This isn't the best "chada", or even the best Helena Ramos "chada", but it's definitely worth a look