Princess Fedora Romazov is to marry Count Vladimir Andreyevich, a match which will mend his fortunes. He is shot and dies, with suspicion falling on Count Loris Ipanov, who has fled the country. In Paris Princess Fedora finds the Count and invites him to her house, intending to unmask him. He, however, shows her a letter proving the duplicitous intentions of Count Vladimir, who had been his wife’s lover. To avoid interception by those that Fedora has warned of his guilt, he stays the night with her. In the third act the couple, now settled in Switzerland, learn that the revelation of Count Loris’s responsibility for the death of Count Vladimir to the Russian authorities has led to the death of his brother in Russia, causing the death of their mother. Fedora confesses that this is her fault for telling the chief of police of his supposed guilt and of his brother’s complicity. He curses her and she poisons herself, dying in his arms.
Count Loris’s Amor ti vieta (Love forbids you), as he declares his love of Fedora in the second act, has motivic importance in the opera, and is heard again as Fedora dies.