The story about four friends who travel to an isolated lakeside cabin for a weekend of partying,including hot times in the sauna. But something has gone wrong. The sauna door is now blocked from the outside, trapping the teens inside with the heat on full-blast and no way to turn it off. At 190°F, their skin will sear. At 200°F, their lungs will burn. At 212°F, their blood will boil. Tonight, the temperature is headed for 247°F!