The teaser trailer provides context about the plot of If I Stay, which follows a teenage girl named Mia who gets into a car accident and ends up in a coma. During an out-of-body experience, she must decide whether to wake up and live a life different than she imagined or let go. Scenes from the film show Mia's life before the accident, including playing cello, bonding with friends at a bonfire, and falling in love. The trailer uses narration and dialogue to set up Mia's backstory and hint at the choice she faces without revealing too many details.