A boy saves a naga that falls into a hole. The rescued naga is actually the son of the naga king. As a result, the boy is invited to the naga palace, where he brings back a red female dog as his reward. However, the red dog is actually a naga princess, and she becomes his wife. One day, when he takes his wife to meet the king, the king falls in in love with the naga princess. The king tries to take the man’s wife by challenging the boy with horse races, covering the mountains with cloth, war, and so forth. Following the order of the naga girl, the boy borrows the treasure box of the nagas to defeat the king. However, he spends all the treasure and when the husband takes away the naga girl's golden flute, she leaves him.