A witness to the birth of the Universe, a cosmic exotic, a giant superstring, the gravity of which is many times higher than the gravitational field of monsters such as Jupiter, approaches the Solar system, attracting and breaking into pieces planets, asteroids and ... spaceships that met on the way. A similar object, only much smaller, half a century ago has already flown into the human habitat, and the Earth has avoided disaster. What was it then? Trial "shot"? Test of durability? And now? Someone decided to guarantee to clear the space of future expansion or is it a tragic coincidence, These questions will be answered by Major Denis Molodtsov ,. Commander of the Expedition to the String , ready to look for unexpected solutions in non-standard situations. He does not want to be saved in the name of the people. Ready for anything...