You're invited to the lake house.When newly engaged Sidney is out on a date with her fiance, she runs into an old flame, Cole, and his girlfriend. Initially, Sidney resists when Cole invites them to join his table but when the couples hit it off, she sets aside her reservations.Soon after, Cole's invitation extends to a stay at their remote lake house.What starts as a picturesque weekend unravels into a chilling nightmare when misunderstandings turn to paranoia and tensions reach a boiling point.Sidney tries to escape when she realizes the truth.Leaving was never an option.