Rome around 1800. The city groaning under a regime of terror. The revolutionary-minded painter Mario Cavaradossi is charged in the Church of Sant'Andrea della Valle to create Maria Magdalena paintings one. From his captivity escaped Republican Angellotti family the Attavanti, has hidden in this church and now makes Mario to noticeable. This is called him a safe hiding place on his property. Hardly a friend fled Angellotti, the cruel police chief Scarpia enters the Church. In the approved open grave Chapel of the Attavanti, he finds the fan of the sister of Angelottis. Immediately is in the clear that where he had to have sought refuge in the Church. He knows of the friendship of Cavaradossis and Angelottis. In addition, he wants to win Cavaradossis lovers, the singer Floria Tosca, for themselves. He so irritating Toscas jealousy by showing her the fan, and it therefore suggests a ratio of the young Attavanti with Cavaradossi. Tosca immediately rushes to Cavaradossis Villa around him on the speech to make. Scarpia is unnoticed some cops follow her. After Tosca had convinced of the inconsistency of their fears and the Villa leaves, Cavaradossi is arrested and brought to Scarpia. Tosca which learns of the arrest, rushes also cause: in her presence, Scarpia is torturing her lover. Tosca, then, reveals the hiding place of Angelottis. Cavaradossi is to be executed on the next day. Only when Scarpia Tosca heard, he wants to give him life. To the ticket, Tosca enters with the offer: Scarpia then arranges a fake execution with blank-loaded guns. When he goes to Tosca to receive "his reward", she stabs him. But Scarpia had deceived Tosca and ordered a real shooting. Now, life has become senseless for Tosca. At the approach of Scarpia's henchmen, she lunges of the Castel Sant'Angelo on the her lover had been shot...