Having retired from business, Baroness Amalia Korf, a former secret agent of the Russian emperor, finally decided to live for her own pleasure. But dreams of a vacation were not destined to come true! The brutal murder of Count Kovalevsky disrupted the serene course of her life. A few hours before his death, the count had a big quarrel with Mikhail, the son of Baroness Korf, who, in his temper, promised to kill him... Mikhail became the main suspect - he did not have an alibi. The son swore that he did not kill anyone, but flatly refused to tell where he spent that night. Amalia began her own investigation and immediately realized that a beautiful woman was involved in this case...