If I Stay is a 2014 American science fiction romantic drama film directed by R. J. Cutler, and based on the 2009 novel by Gayle Forman. The film stars Chloë Grace Moretz, Mireille Enos, Joshua Leonard, and Stacy Keach. Seventeen-year-old Mia Hall's life instantly changes after a car accident puts her in a coma. She must choose to go on or not, knowing that if she wakes up her life will be far different from what she had expected.