The relationship between a man and his teenage daughter living a sheltered life on a former island commune, threatens to fall apart when he is faced with fatal illness and her emerging womanhood.
Jack Slavin, a 1960s holdover, is a man of the earth, working the land and defending his territory while eschewing such modernities as television. Jack is devoted to his daughter, Rose (Belle), a 16-year-old girl who is equally as devoted to him. But Jack is sick, so he asks his girlfriend, Kathleen (Keener), along with her two sons, Rodney (McDonald) and Thaddius (Paul Dano), to come from the mainland and move in with them, thinking they can be Rose's family once he dies. But Rose begins to act out in dangerous ways, threatening to severely damage the already fragile relationships that are developing.