In despair, her singing awakens people's conscience, including love. Rosan Coss (Julianne Moore), a world-renowned soprano with a heavenly voice, is invited to a private birthday party in South America to sing for Mr. Hosokawa (Ken Watanabe), a Japanese businessman who loves opera very much. Diplomatic envoys and political and business celebrities from all over the world gathered and celebrated, until the sound of gunfire broke through the sky and the joyous atmosphere came to an abrupt end. Countless wails and screams rose up, and a group of armed revolutionaries broke in and took everyone hostage. A thrilling negotiation began, and a long stalemate followed. Trapped in danger, with her life hanging by a thread, Luo Shan, who was exhausted both physically and mentally, accepted the order to sing, quietly awakening the indestructible humanity and love. Through the moving notes, she made everyone forget that they were still in danger and became captives of the beautiful voice...