The meeting with Tsarevich Nikolai Romanov and his salvation from death radically changes Ermak's life: cadet school, first officer rank, award from the hands of the imperial couple. Hereditary nobleman and Knight of St. George Alenin-Zeysky gains access to high society. New acquaintances, new love and new assignment. The young cornet Timofey Alenin becomes the head of the bodyguards of the governor of the Far East - His Imperial Highness the Sovereign Heir Nikolai Alexandrovich. Ermak faces the main question - are these changes in history caused by his actions, or did he end up in a parallel world?