A miraculous choral challenge by 31 global children from 17 countries, including Vietnam, the Philippines, and Ireland! Korea's top music director, Kim Moon-jeong, becomes the leader of a children's choir for the first time, guiding the global children's choir <Ensemble>. Their one and only goal: the "Korea International Choral Competition," where the world's strongest choirs will gather. Through 90 days of tears and soul-searching, from basic techniques to high-level performances, they overcome their differences to create a single harmony. A 100% heartwarming and growth-filled real documentary, <Ensemble>.