It’s finally here! Watch the first trailer for If I Stay below. The film is based on the novel by Gayle Forman, and stars Chloe Grace Moretz and Jamie Blackley. The story follows a young musician, named Mia, who develops a relationship with a boy named Adam. She is a serious musician, and has big dreams to go to Juilliard. However, when she is involved in a car accident she has to make a huge choice: to decide to give up everything, or keep on living.