On a sunny day, Karen (Gage Golightly), Paul (Samuel Davis Samuel Davis), Jeff (Matthew Daddario Matthew Daddario), Marcy (Nadine Crocker), and Burt (Dustin Ingram Dustin Ingram) Five friends came to a mountain resort away from the hustle and bustle of the city. Men and women enjoy their romantic time, and Burt, who is a little bit stupid, plays with a semi-automatic rifle, but accidentally hurts passers-by. As night fell, they returned to the cabin to rest. At this moment, the man shot by Burt came for help. In order to hide the truth, Burt lied that the man was infected with a mysterious virus, so that everyone ruthlessly shut him out. This incident completely destroyed their vacation, and there are even more terrifying things waiting for several young people...