Jillian loves being a stay at home mom. But when her son starts kindergarten, she realizes quickly how lonely she is. Things start to look up when she befriends the mysterious Madison, who seems to conveniently enter her life at just the right time. The two women immediately bond, and Madison invites Jillian and her husband for a peaceful, adults-only weekend away at her boyfriend's lake house. They find a sitter for their son, pack their bags, and head to the Adirondacks. The lake house is on a private, secluded island. It all seems perfect until someone ends up dead. And if someone screams in the middle of a lake, with no one else around, do they even make a sound?