Emperor Paul I in his youth experienced a palace coup and the mysterious death of his own father, the overthrown Peter III. For many years, the Tsarevich tried to avenge him and punish those responsible, but Catherine II limited the heir in power and resources. Therefore, when the Prussian king gave Pavel a valuable painting, he found a way to hide the masterpiece from unwanted eyes... Nowadays, the rich heiress Galina Basmanova returns home from Switzerland and learns that her father left a secret will, which radically changes the girl’s life: people are starting to live around her. Mysterious disappearances and murders occur, long-forgotten friends appear in strange ways, and Galina herself is hunted by unknown attackers. And now she has to not only protect her own life and her father’s legacy, but also unravel the mystery of the painting, inconspicuous at first glance...