Colonel Aleksandr Volkov teaches at the FSB Academy, he is seventy, he is retired. Captain Igor Kamorin is an active operative, he is twenty-seven. Kamorin is a fan of electronic gadgets, and Volkov does not know how to use WhatsApp. Kamorin believes in progress and believes that Volkov's "lamp brains" became obsolete in the last century, Volkov is sure that Kamorin's "clip thinking" is not suitable even for solving crosswords. However, in tandem, these two will have to do the impossible: combine the old school and modern technology.