Juniper harbors a crush on Tristan, the lead singer of her overprotective brother's band. After a mistaken-identity encounter in the dark, they begin a passionate secret romance. When her brother discovers the truth, the band fractures. Rival bandmates betray them by stealing their song, and Tristan's wealthy father forces him into an arranged marriage. Juniper and her brother must rally to save Tristan's dreams, leading to a triumphant music festival victory.