When a fisherman named Ewan falls in love with a selkie - half-woman, half-seal - she gives him her sealskin as a sign of her love, and 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 mesmerizing stories of the cities of gold and pearls beneath the waves. This lovely, lyrical story of love and freedom was inspired by Welsh myth and a real deserted village in west Wales.