The film is based on documentary facts and tells the story of an officer in the Japanese General Staff who received the task under the name of Captain Rybnikov to infiltrate the military circles of St.Petersburg. It was exposed after the famous Tsushima battle of 1904, when Japan destroyed the entire Russian Far Eastern fleet.

• Lenfilm
• Aleksandr Sporykhin
• Sergey Kushakov
• Aleksey Guskov
• Leonid Voron
• Svetlana Svirko
• Mikhail Shchetinin
• Anna Afanasyeva
• Yevgeni Yerokhin