Tito Amato returns from an operatic tour expecting to relax with his family. Instead he finds his merchant brother Alessandro imprisoned on a trumped-up smuggling charge, a capital crime in 1740 Venice. The senator who controls Alessandro's fate is determined to have a Venetian as the next pope. He forces Tito to Rome to sing at the villa of a powerful, music-loving cardinal who will control the coming papal election. Spying as he serenades...