"No matter how dark it may seem, light finds a way to shine through," the mermaid king tells his daughter, and as she explores his undersea kingdom, she never doubts his words. In the days before the moon and tides exist, the kingdom is at peace. Singing fills the streets, and the subjects thrive under the reign of their king, queen, and princess. Then a shocking betrayal robs the kingdom of light, silences all singing, and plunges the mermaid...