Best friends, Pat and Deb have always dreamed of creating a fabulous retreat center on picturesque Madeline Island located in Lake Superior off the coast of northern Wisconsin.  When they decide to finally make it happen by planning a retreat over summer solstice, they think it will just be a lark with family and friends.  When Pat's son decides to make a cute vid as a clever invitation for them, their dream of a relaxing weekend with family and friends turns into a nightmare.  Especially after a woman turns up missing from the ferry!