人鱼小姐Chiara lives on an Atlantic island, where her husband Antoine grew up. They are a happy and loving couple. She has been taught Antoine's hard fishing job and has been working with him for twenty years. The arrival of Maxence, a young apprentice is going to rock their balance and alter Chiara beliefs. Soon her and Maxence begin a passionate romance but their age-gap, Maxence is far younger than Chiara arises the rumors and hostility of their neighbors.