Emanuel has a rich and creative inner life, but living with her father (Alfred Molina) and stepmother is painfully boring and unfulfilling. On the verge of her eighteenth birthday — a day that Emanuel prefers to ignore since her mother died giving birth to her — the mysterious Linda (Jessica Biel), moves in next door and changes everything. Intrigued by Linda’s striking resemblance to her late mother, Emanuel uncharacteristically offers to babysit for Linda’s newborn daughter. As Emanuel and Linda spend more and more time together they develop a bond that sustains them both. Unwittingly, Emanuel enters a fragile, fictional world where she finds herself the gatekeeper to a surprising secret Linda harbors. To truly save them both, Emanuel must go to a place she has never dared enter before.