Anastasia Volkonskaya is an expert operative of the Investigation Department, a gentle young lady with a mysterious past, an unclear future and many mysteries in the present. Solving them is Anastasia’s job. But the riddle is different from the riddle. Will Madam Expert be able to solve the puzzle named Prince Daniil Severov, the advisor-envoy of the neighboring state? Or will it be he who will unravel Anastasia’s secrets, forcing her to make a choice between the familiar past and a future full of surprises?