The resilient Emma Mukhina and her friend Volodka are again conducting an investigation. This time they foil a villainous assassination attempt... on the President of Russia! Brave guys will find labyrinths of the Kremlin dungeons, a meeting with a maniac killer, jumping from a helicopter, an ambush in an abandoned house, shootouts and even... an explosion in the Kremlin. In addition, brave guys, at all costs, need to unravel the mystery of the cunning professor who is engaged in rejuvenating people, because the disappearance of the president and other troubles are in some strange way connected with his activities...