The crumbling convent of Our Lady of Mercy stands alone in an uninhabited part of the Spanish sierra, hidden on a hill among dense forest. Its inhabitants are devoted to God, to solitude and silence--six women cut off from a world they've chosen to leave behind. This all changes on the day that Mother Superior Maria Ines discovers a suitcase punctured with air holes at the entrance to the retreat: a baby, abandoned to its fate. Is it a miracle? Soon she will find that the baby's arriva...