Parker (Emma Bell) has a deep prejudice against Lynch (Shawn Ashmore), the best friend of her boyfriend Dan (Kevin Zegers). One day, the three of them went skiing together. When they arrived, the ski resort was about to close. They bribed the ticket inspector to take the cable car up the mountain. The ticket inspector left for something temporarily. The staff who came to change shifts unknowingly pulled the power switch of the ski resort, locked the gate and prepared to leave. The ski resort was about to enter a mountain closure period of several months. Parker and his party were hung on the halfway up and down the mountain. Faced with the dangers of nature, humans are so vulnerable. It was getting dark, cold, hungry, any one of them was enough to kill them. The three people who were at a loss were eager to escape, but their recklessness and ignorance caused them to suffer heavy casualties. At this time, they realized that in addition to fighting against the bad weather, there was also a group of hungry predators who were staring at their prey.