The very rich and powerful Emperor Ping Chu is smiling again since a small nightingale became his friend and sings to warm his heart. However, when a distant sovereign offers him a mechanical bird made of gold and diamonds, the dazzled emperor abandons his little friend.
The real nightingale then returns to its liberty. Time passes... But can a toy replace a beautiful friendship?
This story is also available in French: L'empereur et le rossignol.