The height of the Cold War - the 60s of the last century. Pentagon projects directed against the USSR are under implementation: “Chrome Dome” and “Ice Worm”. In anticipation of nuclear strikes on cities and targets of the Soviet Union, US Air Force bombers patrol the skies of Europe and the Atlantic around the clock. Sites for placing intercontinental ballistic missiles are being built in the thickness of the Greenland ice sheet. Soviet illegal intelligence agents come into play. The FBI is hot on their heels. Suspects, subjects to provocations, interrogations, confrontations. Miraculously, they escape from the most dangerous situations and fulfill the Center’s task.