Sicily, 1904. On the eve of her engagement, the young freedom-loving Costanza learns that her father has committed suicide. The engagement is broken off, and her family sends the heartbroken girl to New York — a city where many Italians move in search of a better life. She settles with distant relatives and starts anew, enduring a painful longing for home. Only after moving to Naples does Costanza regain the ability to breathe and love again. More than a hundred years later, her great-granddaughter, opera singer Lucilla, accidentally learns about her great-grandmother's fate and attempts to trace her footsteps. This story is filled with the powerful music of waves and the aromas of coastal cities. Here, the joys and tragedies of the heroine intertwine with historical events. But whatever storms fate has in store for her, the eternal blue sea — "from edge to edge, where the sun is born and dies" — soothes and brings peace.