On March 15, 1848, a young firebrand poet, Sándor Petöfi ignites the Hungarian Revolution with his passionate 'National Song', prompting the Austrians to dispatch a ruthless secret agent to assassinate him and suppress the uprising.
Song Ha, a young Vietnamese woman arrives in Budapest with a distinctive goal: she wants to discover her roots. While she investigates the past, a romantic relationship blossoms between her and Viktor, a Hungarian man.