In the absolutely rational Huang Empire, the genius dream weaver Yun Huan is regarded as the most perfect "humanoid weapon" because he cannot perceive emotions. However, during a border mission, he captured Yueyao, a tribal girl who could heal mental wounds with singing. Her existence constituted a fatal interference that could not be analyzed by his cold logic.
Forced to flee the world, one of them is searching for the "Eternal Piano", an ancient artifact that can reshape the world, and the other is exploring the truth about what emotion is. When the empire's cavalry and dusty secrets came one after another, the iceberg of rationality finally cracked a gap in her heart. And when the final truth is revealed, they must face a choice together: follow a cold fate, or work together to compose an eternal poem of human emotion and courage.
