Watch full movie online. During the reign of Russia's Empress Ekaterina II (Catherine the Great), Count Orlov writes a letter to the Empress, denouncing Princess Tarakanova as a traitor and a would-be usurper. On the Empress's orders, Tarakanova is led into a trap and arrested. Because the Princess continues to insist that she is the only true heir to the throne, she quickly finds herself in great danger.