On an enchanted island in the Caribbean, little Luisa is born. She captivates everyone with her beautiful voice. One day, letting herself be carried away by the sound of the sea and the songs of the sirens, her parents lose sight of Luisa, and the whole town joins in her search. For their surprise, they find her turned into a mermaid, singing beautifully above a rock. The little one becomes the attraction of the island and everyone around the world comes to see her, among them, a fisherman that moves into the island with the purpose of capturing her and sell her. Luisa and her mermaid sisters will have to elaborate a plan to fight this villain.This story rescues that illusion and naivety that many parents have stopped cultivating in their children; in turn, it awakens the little hero that every child carries inside, just as Luisa is for her people.