1553. The tragic death of Ivan the Terrible’s son, the prince Dmitry. During the investigation, it becomes clear that the child was the victim of a carefully planned assassination attempt. The organizer’s name is also known—Prince Vasily Rostov. He flees to Livonia, hoping to escape the inevitable punishment abroad. The tsar sends a special detachment in pursuit of the criminal under the command of Prince Dmitry Saveliev. Only these heroes are capable of such a dangerous operation. Saveliev catches the fugitive and is already ready to seize him—but at the last moment Prince Rostov makes an unexpected confession: he is only a victim of a frame-up, and the real killers are still at large…