One is a phoenix flying in the nine heavens, and the other is the only black lotus left in the world. They were originally two parallel lines that did not intersect with each other, but fate made them meet. The phoenix dances and the flowers bloom, and we spend hundreds of years knowing each other. But things are unpredictable. The God of Darkness has returned, and the six realms are surrounded by crises and disasters. The phoenix sacrificed its life to save the common people, and the flower stayed immortal for thousands of years. He had promised him that he would keep a heart for him for the rest of his life. When they meet again, they go hand in hand to save the common people, but they don't know whether they can fulfill their promises to each other?