The prologue written by Gayle Forman in her hit novel If I Stay is brought to life through actress Chloe Moretz's narration in a new trailer for this upcoming adaptation. The story centers on Mia Hall (Chloe Moretz), a young up and coming musician who is caught between life and death for one day, where she is forced to choose between joining her family in the afterlife following a tragic car crash, or staying with the love of her life (Jamie Blackley). Take a look at the latest footage as Mia ponders this impossible choice in director R.J. Cutler's adaptation, arriving in theaters August 22.