When Y/n and Alicia, the only American members of the K-pop duo LIVV, sell out their Live Harmony world tour, a surprise backstage visit from BTS turns into a frenzy. Sparks fly when RM proposes an explosive collab, plunging the girls into a whirlwind of fan outrage and a dizzying, multi-layered romance with Jungkook, Jimin, and V.