Plot outline is a couple enjoying their time in a luxurious home that is fairly isolated from society, and during the course of one night a whole family of psychopaths wearing either burlap bags or sacks over their head begin scouring their home discreetly and eventually invade. All I remember after this is the couple tries to survive until the next day. There's a scene where they hide in the dressing room with a rifle pointed at the only door in.