Prince Juqu'an saw the lover he had been looking for for several lifetimes in the mirage of the desert. After experiencing the destruction of the country and being a slave, he finally grew up to be a king. The lover is actually a thousand-year-old snake demon. For a perfect love, he cuts his blood to get pills and jumps off a high city wall for him. Their persistence in love allowed them to go through countless entanglements and twists and turns, and finally reunited in the grassland.