When a fisherman called Huw falls in love with a selkie - half-woman, half-seal - she gives him her sealskin as a sign of her love. She bears him two children, Ffion and Morlo, before returning to her own people. A few years later a stranger comes to the village, telling of a land far away, and Ffion and Morlo remember their mother's stories of the glittering cities underwater. Will they be able to find those places, and their mother? This lovely, lyrical story of love and freedomwas inspired by Welsh myth and a real deserted village in west Wales.