Eight friends get together for a winter holiday at the Washington family cabin in the Canadian Rockies a year after a mean-spirited prank caused twins Hannah and Beth Washington to go missing. Their troubled older brother Josh, capable best friend Sam, cocky chick magnet Mike, nerdy class clown Chris, geeky bookworm Ashley, friendly jock Matt, flirty popular girl Jessica, and narcissistic academic Emily, find themselves terrorized by a stranger and begin to unravel the mystery of the twins' disappearance as they try to survive until dawn.
