In Switzerland, Russian naval submarine officer Sergei Redin, who came to a scientific congress, was kidnapped in broad daylight. It is unclear who needed this and why, because he did not know any special military secrets that could be of interest to foreign intelligence. This mystery will have to be solved by the Team, a mobile combat group under the President of Russia, headed by German Taleyev. The search leads specialists to a mysterious military base in Iran. The team will not only have to save their compatriot. It is much more important to understand why the Iranians suddenly needed Russian sailors...