In 2024, Lithuania celebrated the centenary of the Song Festival. A week of spectacular events brought people together, attracted hordes of tourists, and invited hundreds of Lithuanians from all over the world to return home. What does this tradition mean to us? What does it take to create an event of this scale? How to prepare for it? What are the thoughts that go through the minds of the creators a few minutes before the concert? The documentary "Celebration" invites you to visit the place where magic is born - the backstage of the Lithuanian Song Festival. The film features unseen footage from the biggest events of the festival, the excitement and challenges of the preparations, the human talent that has travelled through the generations and the overwhelming feeling of unity. Vytautas Miškinis, Eglė Daugėlaitė, Saulius Petreikis, Zita Bružaitė, Vaidotas Valiukevičius, Leokadija Dabužinskaitė, Vidas Mačiulskis, and 37,000 creators of the Song Celebration.