Nikita Kryukov is a successful hockey player in the past, who ended his sports and then his agent career because of his uncontrollable anger. No one is ready to work with him. Suddenly, he receives a message about his mother's death. He breaks off to his hometown. But it turns out that this message was sent by the mother's youngest daughter from her second husband. After his father's death, Nikita almost immediately went to Moscow, and then to America, and all this time he did not communicate with his mother — he could not forgive the fact that she almost immediately got together with another.

Based on true events, this tale follows the extraordinary bond between a boy and his dog in besieged Leningrad. In 1939, young Mitya finds joy in the companionship of his loyal dog, Karuza. Their idyllic life is shattered when World War II erupts, plunging Leningrad into a brutal siege where starvation looms over its residents. As despair grips the city, Karuza with her keen instincts and unwavering courage ventures into the perilous streets to scavenge for food. Inspired by Karuza’s remarkable bravery, Mitya decides to join her. Together, they are forging a path through despair and hopelessness. However, their efforts take a dangerous turn when they are discovered by German soldiers during one fateful outing.

Young professor Anton Kosmich studies the history of Belarus. One day he is mystically transported to the Middle Ages, where he will have to unravel the secrets of the past millennia.