Louise (Mackenzie Davis) and her family are invited to a secluded country cottage for a vacation, but they discover terrifying secrets in various weird details - the silent boy (Dan Hough), the ghost couple (James McAvoy, Aisling Franciosi), ...... Warm outings become horrific nightmares, murderous machines are hidden, pressing step by step, deep in a puzzle, how to save yourself?
The film is a remake of the Danish film of the same name.