خلاصه داستان : پشت دیوارهای یک شهر ممنوعه، تنها چیز خطرناک تر از اسرار آن حقیقت است...

Hidden in the heart of Russia, there is a Soviet-era city where thousands of people live and work behind barbed-wire fences monitored by armed guards. It is Ozyorsk (Ozersk), located in the Chelyabinsk Oblast, one of the most polluted places on the planet and home to the largest stockpiles of nuclear material. Its code name: City 40.