Until Dawn – Film

Clover, her ex-boyfriend Max, her friends, Nina and Megan, and Nina’s boyfriend, Abe, are retracing the steps of Clover’s missing sister, Melanie. The group stops by a gas station from which Melanie had previously sent a message, and Clover meets the station attendant, Hill. He claims that people tend to go missing near a mining town called Glore Valley. The group drives there, but heavy rainfall forces them to seek shelter at a visitor center.

There, Abe finds a wall filled with posters of missing persons, including Melanie. Nina signs into the center’s guestbook. Downstairs, the group finds another house underneath. A masked assailant suddenly attacks and kills everyone.

The group awakens on the first night with a new, additional guestbook signature and their own missing person posters on the board. They realize that the night is repeating, indicated by an hourglass in the main room. Megan is possessed and killed by a supernatural force that drags Clover into a dilapidated house across from the center, where she meets an elderly Glore Valley resident who tells her that she can either “survive the night, or become part of it.” Abe and Nina are murdered by the masked assailant. Possessed, Clover kills Max before she gets run over and dies.

The night begins anew as the group realizes they are in a time loop with only 13 deaths before they disappear like the other visitors. They barricade themselves in the bathroom and drink the tap water, which causes them to explode. The group dies, and as Clover perishes, she sees Hill, who reveals his involvement. Starting the night again, an argument arises between the group. Nina, angered by Abe’s attempt to abandon them, stabs him with a pickaxe. While Clover, Max, and Megan explore the woods, Abe and Nina are murdered again. The other three are attacked by wendigos in the woods, which results in Megan’s death. Clover and Max meet Melanie, who has turned into a wendigo herself. Heartbroken, Clover tells Max to kill her, so they can start the night again and learn more. Max slits her throat and drinks the water that causes him to explode.

Looking for answers, the group discovers that Glore Valley sank into the ground after a mining disaster, killing hundreds, and that Hill was brought in to act as a therapist to the survivors. A VHS tape shows that those trapped at the center turned into wendigos after being killed on the 13th night. The group attempts to find Hill and go through several nights of repeatedly being murdered by various creatures. A flashback shows Melanie leaving Clover after their mother’s death. Clover awakens on their 13th night, where the group’s bodies have started deteriorating into wendigos. Megan is missing, and the group discovers she survived a night and has followed Hill into the tunnels.

Ready to confront Hill, the group follows Megan’s trail, fending off the wendigos. Clover splits from the others to track down Hill. She is forced to kill her sister and finds herself at the Sanatorium, where Megan is trapped in a room with a wendigo. Clover confronts Hill, who reveals he is running experiments, and the creatures they faced are manifestations of Clover’s depression and fears. Hill places his coffee on his desk and Clover moves it under the lethal water dripping from the ceiling; he explodes after ingesting it. She retrieves the keys and frees Megan. The others manage to kill the masked assailant, and they flee through the tunnels, pursued by the wendigos. They escape just as the hourglass runs out and the sun rises. Now free from the time loop, the group drives away.

Meanwhile, a surveillance system in Hill’s office changes to a snowy cabin where a car pulls up and Hill’s whistling can be heard.