Vadim Volkov

Ilya lives in Moscow; Nina lives in St. Petersburg. Ilya has a beautiful wife and a daughter; Nina's husband is an artist, and they have a young son. Nina occasionally travels to Moscow to see her partners in the publishing industry. Ilya sometimes comes to St. Petersburg on business. But more often they are in the train between St. Petersburg and Moscow just to see each other. Because they have an affair.

He was betrayed by a friend and the woman he loved. His brilliant inventions were stolen through deceit. Thirty years later, he awoke from hypersleep. Both hatred and love were left in the distant past. But sometimes, those who never give up manage to find a 'door into summer.' Even if it means returning to their own past...

Russian Empire. The second decade of the twentieth century. As a result of the conflict between the Entente and the bloc of the Central Powers led by Germany, which erupted in August 1914, Russia is drawn into the First World War. A wave of unrest is rolling through the country. Revolutionary moods are increasing every day. Counterintelligence is trying with all its might to suppress the activity of German spies active in the territory of the country ...