The Cold War is in full swing: the USSR and the USA are strangling each other “in heaven, on earth and at sea.” Russian craftsmen are creating another “Miracle Yudo” - a nuclear submarine cruise, inaudible by NATO sonars. In a fight to the death, the one who beats the enemy by a fraction of a second wins. To detect the “red monster” in advance, the West is sparing no expense. Finally, “super ears” were created - the Poseidon and Crab systems. They can hear the sound of an iron barrel being thrown overboard a hundred nautical miles away. But the secret drawings of Poseidon end up in the Lubyanka safes. If something extraordinary happens in the war of the special services, Cherche la femme. There is no need to look for our heroine - she is always somewhere close to people privy to the secrets of NATO. Her name is Madame Gali Legare, her pseudonym for a KGB secret agent is “Gvozdika.”