Lanyin is a talented marine genetic researcher whose life experience is a mystery. Her laboratory is located deep in the human "Abyss City", and she studies the strange proteins of the Merman's Teardrops. At night, she transforms into the "Nightingale", a singer who captivates all living beings, and wanders around the noble salons with her singing voice that contains the power of the ocean, just to find the legendary "Sea-Ding Pearl" that can command the seven seas. However, when she finally got close to her target - the majestic and stubborn leader of the Shark tribe, Cangming, she discovered that the "Dragon Ball" was not an artifact, but an ancient ecological core that maintained the ocean's carbon cycle. Faced with mankind's greedy exploitation of the ocean, the Sharks' distrust of mankind, and the infrasonic threat of the Presbyterian Church, Lanyin must walk on the tightrope of dual identities. Using her unique perspective of ecological economics as a weapon, she promoted the "Hai Song Carbon Sequestration" in the human court, negotiated the "Sound Wave Convention" in the Mermaid Council of Elders, and transformed the secrets of the Mermaid Teardrops into seawater desalination technology that benefits all living beings. This is a game of checks and balances across races, an adventure to rebuild the order of the ocean with singing and wisdom. Can Lanyin use "Cangming Pearl" to compose a new chapter of symbiosis between humans and sharks?
