In an aquatic kingdom filled with magic and mystery, there lives a young mermaid named Aline, who dreams of exploring the human world. Since she was very young, she has been fascinated by the boats that sail the surface and the legends about human life. Everything changes one day when, after a storm, she finds a handsome prince adrift. Determined to save him, Aline risks everything and, with a little help from her marine friends, manages to rescue him and bring him to the shore, although she cannot reveal her identity to him.
The prince, grateful, feels drawn to the mysterious young woman who offers him help. But Aline, bound to the depths of the ocean, feels dissatisfied with her life. Her desire to belong to the human world leads her to make a pact with a powerful sea witch. In exchange for her voice, she gains legs that will allow her to walk on land, but at a high cost: if she fails to win the prince's love, her soul will belong to the witch forever.
Aline ventures into the human world, facing misunderstandings and difficulties. However, her immense courage and desire to love lead her to experience moments of joy and sadness as she discovers the true meaning of love and sacrifice. In this poignant story, the boundaries between the ocean and the land blur, reminding us that sometimes, true love requires extraordinary bravery.