Three years since after they started dating, Hallie and Owen reunite with their respective friends Willa and Matt at a house party in Malibu, California. That night, Hallie and Owen have a minor argument during the Independence Day (United States) fireworks but reconcile upon going home. Unbeknownst to Matt, Willa has a secret relationship with the man named Jakob via text. Willa then moves into Matt's house and they have sex. The relationship between Hallie and Owen begins to deteriorate and she leaves his house.