After finding their father dead in the shower, 17-year-old Andy and his partially sighted step-sister Piper are sent to live with Laura, an eccentric former counselor who also fosters a mute boy named Oliver. Laura's daughter Cathy, who was also blind, died by accidental drowning in the backyard pool. Andy becomes unsettled by Laura's behavior and Oliver's strange demeanor. Laura begins subtly undermining Andy's mental state, suggesting he is unfit to care for his sister.