Jenna (Scout Taylor-Compton) gets into a car accident with her boyfriend, Jamie, who eventually dies. Three years later, while coping with her past tragedy, Jenna is invited to stay for the weekend in a lakeside cabin by her best friend Renee (Christina Ulloa). They are joined by Reneeâs irresponsible boyfriend, Michael (Michael Copon), and his friend, Ian (Travis Van Winkle), and sail off at Ian's uncle, Wade's (Tyler Mane) lakeside cabin. They are greeted by Wade along with his friendly dog, named Beau. They settle in the cabin and plan on attending a party, since there is a festival happening around the nearby town at night. Jenna goes to her room and refuses to take her pills so she could have fun with her friends. While they all eat dinner, Wade mentions how he may not be around while they are away since he has work to do. The group gets fascinated when they stumble inside a sauna Wade built. While they enjoy spending time inside, the temperature gets warmer and they decide to swim at the lake. Trembling in cold, they all head back inside the sauna. Meanwhile, Michael gets high from the marijuana Wade had given to him, where Renee rebuffs his sexual advances. This upsets Michael and gets out of the sauna. As the temperature continues to rise, Renee ultimately decides to leave but the door is blocked from the outside. The trio think it is just one of Michael's pranks since they all know he's mad at Renee, which they don't find amusing. They soon realize that they are trapped in the sauna and attempts to break a small window on the door, injuring Ian's hand. They all take turns gasping for air as the temperature raises even higher with another unsuccessful attempt to unblock the door from the outside. The group then finds a hidden controller which they all can't risk destroying, since Ian believes it would just alter the temperature.Meanwhile, Wade is seen handling the fireworks for the festival with another guy, when Beau tracks the trio's scream, begging for help, from the back of the house. Michael shows up at Wade's and both disregard Beau's barking. Michael clearly thinks the three left him and attended the party, since he couldn't help himself from getting high. The two hang out and start a conversation as Michael explains that he wasn't permitted to catch up at the party with the group since he didn't have a ticket and returned home.Back at the sauna, the situation escalates as the group runs out of water to drink and Renee gets sick from the temperature. Renee ultimately decides to break the controller, thinking it would lower down the temperature, but is stopped by Jenna who inadvertently strikes her head, leaving her unconscious. Jenna starts freaking out and decides to break the controller herself, which does in fact increase the heat as Ian feared. Ian becomes hysterical and burns himself badly in an attempt to prevent the steamer from heating the room out of control. He fails and the steamer blows up, killing him. The explosion frees the door and Jenna steps out in shock and wanders the house before reality snaps her back from unconsciousness to the floor of the sauna. She finds Renee alive and lets her near the window to breathe.Michael returns to the cabin where flashbacks shows him absentmindedly knocking over wooden steps and setting them against the door. It is revealed that the steps fall into place against a raised floor by the occupants as they talk and move the door themselves. Meanwhile, Wade arrives at the cabin and discovers the two girls, alive and calls the paramedics who take Jenna and Renee away on stretchers as they hold hands.
Question: What is Jenna's boyfriend called?, Answer: Jamie Question: Who discovers two girls?, Answer: Wade Question: Why wasn't Michael permitted to catch up at the party with the group?, Answer: He didn't have a ticket. Question: What part of his body does Ian injure?, Answer: hand Question: Where do Jenna, Renee and Ian get trapped?, Answer: Sauna Question: Where do Jenna, Renee, and Ian get trapped?, Answer: sauna Question: What is Michael knocking over absentmindedely?, Answer: wooden steps Question: Who gets burned?, Answer: Ian Question: Who dies in the end?, Answer: Ian Question: What is the cause of Jamie's death?, Answer: car accident Question: What is the name of Wade's dog?, Answer: Beau Question: Who stops Renee from breaking the controller?, Answer: Jenna Question: What is the name of Jenna's best friend?, Answer: Renee Question: What is Renee's boyfriend called?, Answer: Michael Question: Who injures their hand breaking a window?, Answer: Ian Question: How does Ian die?, Answer: When the steamer blows up Question: What blows up?, Answer: The steamer Question: What drink does the group run out of?, Answer: Water Question: How does Renee try to lower the temperature?, Answer: break the controller Question: Who gets sick from the temperature at the Sauna?, Answer: Renee Question: What does Renee break?, Answer: The temperature controller Question: Who's barking do Mihcael and Wade disregard?, Answer: Beau's.