The Emperor of China hears that one of the most beautiful things in his own land is the song of the nightingale. He sends his courtiers to take a nightingale from the nearby forest and present her as a guest at court. The bird can communicate with the humans and agrees to come, but when the Emperor is given a robot nightingale covered with jewels, he loses interest in the real bird, which flies back to its home. The robot bird breaks down. When the Emperor is taken ill, only the song of the true nightingale can heal him.