In 2006, 18-year-old Bảo spends the final summer of his youth with his closest friends in a quiet coastal town, surrounded by unfinished dreams and endless possibilities. The arrival of Quỳnh—a worldly and emotionally complex woman—awakens feelings he has never experienced before, pulling him out of the safe orbit of his ordinary life. Their passionate romance soon triggers a chain of irreversible events, beginning with a death that changes everything. Twenty years later, the echoes of that summer still linger in silence. Can Bảo truly understand love—and finally forgive himself?