The histories of two families and other important persons who lived in Padua (really existed), during the first world war. Andrea Brandi is a talented young engineer who, taken by the desire to see Trento and Trieste free, decides to leave his comfortable world to join the army during the First World War. The family Guido Filangeri has a daughter Diletta who is engaged to help his father he two fall in love, and Andrea will find the strength to start a company of communication instruments and technology, with the financial support of his initially reluctant father. Andrea and Diletta get finally married. Their relationship, will be strengthened thanks to Father Leopoldo who will lead the young couple to find serenity after a tragic event that could destroy their lives and their love.