The actress Phoebe Kane and her boyfriend Andy, the architect Henry and his wife Julia, the former director Leo and Nathalie receive an invitation for a VIP Tour in the Ultra Studios. When they see the spooky house where the missing director Desmond Hacker filmed Hysteria , they ask their tour guide to stop the car to visit the infamous house. In a moment, they find that they are trapped in a room without any exit and the guide suggests them to tell the scariest experience of each one like in Hysteria . Each one tells a spooky tale until they finally discover the end of their stories.

The United States Government has developed a highly effective nerve gas that is unleashed upon the residents of a small Maryland City. During the top secret exercise the infected citizens begin to convert each resident into a sort of living zombie, until the remaining town residents, 6 total strangers, are trapped inside a movie theater cineplex.