A king has two concubines. The elder concubine dies after giving birth to a princess. After the death of her mother, the princess becomes a servant to the family. Later, the younger concubine also gives birth to a princess. The younger concubine dotes on her daughter, so that the younger princess becomes very lazy. Later, the Palace of Heaven comes to choose who will become fairies in the world. When this happens, the elder princess gets up very early in the morning so she becomes a cuckoo, while the younger princess is turned into a wild bird because she could not wake up from her sleep.