Explore the depths of mermaid mythology, ancient magic, and heart-wrenching love as billionaire siren Gia Acquaviva navigates the treacherous waters of her enchanted world.

In this explosive series finale, Gia faces dire consequences for murder. Tensions from the Mermaid Civil War spill into the realm of mankind, igniting a cataclysmic confrontation. 

Caught in the crossfire of this global battle is Gia's daughter, Serena. What will become of the little mermaid amidst the chaos? Will the Mermaid alliance triumph in their struggle, or will the oceans be forever stained with bloodshed?