In 2012, in the hardest moments of the Greek crisis, the young Rebeca Benveniste is left completely alone and is on the brink of eviction. Her beloved nonna, her grandmother, has passed away, and with her studies in Hispanic Philology she cannot find any He then decides to travel to the small town of Alpartazgo, in the province of Zaragoza, where his Sephardic ancestors left more than five hundred years ago. Among his scant luggage he carries the key that has been passed down from generation to generation and that probably opens the door of the house that his family had to abandon. At the end of the 15th century, Vida Benveniste, the daughter of the butcher of the Jewish quarter of Alpartazgo, befriends Leonor de Lanuza, a member of the most powerful local noble family. Both are intrepid and intelligent and do not accept the limitations of professing different religions. Their lives will inevitably run through very different paths, but their friendship will always prevail above creeds