Unravel the mystery of a nightmarish town in middle America that traps all those who enter. As the unwilling residents fight to keep a sense of normalcy and search for a way out, they must also survive the threats of the surrounding forest – including the terrifying creatures that come out when the sun goes down.

To celebrate their graduation, the teenagers from Valley Hills High School have organized an ’80s-themed party in an old water park. Things grow gruesome when it turns out that a mysterious maniac has inserted giant razor blades into the water slides. The Wet Valley water park thus becomes the backdrop for a bloodbath (literally), and everyone is a suspect…