DeepinRussia,thereisaninvisiblecitythathousesthousandsofmen,womenandchildrenwholiveandworkbehinddoublebarbed-wirefencesmonitoredbyarmedguards.Theyaretoldthattheyarethecreatorsofthenuclearshieldandsaviorsoftheworld.Theyaretoldthateveryoneisanenemy.Inthishiddenworld,amotherrisksherlifetotakeusinsideRussiaslargestnuclearcity.