Russian Emperor Paul I ruled for a short time, but all his life he dreamed of taking revenge on his mother Catherine II, who seized the throne with the help of a palace coup and displaced his father Peter III. Pavel greatly valued the people devoted to him and bestowed the greatest mercy on one of them - he gave him his portrait, in which a secret message was encrypted... Returning home two months after the death of her father, Galya finds a monstrous picture. The house is neglected, the entire old staff of servants has been replaced with new ones, and everything is managed by her mother’s lover, bank manager Sergei Gruzdev. And soon it turns out that Gala will not be allowed to live in peace, because she is the only heir to her father. But you still have to live to take over the rights of inheritance, because this will happen only in a month, when Galya turns twenty-five years old...