Fungus appeared on Earth 200 million years ago. It kills us, and it also saves us from dying. It is called the "bread of the devil" and "spittle of God." It is incredibly beautiful, but it is also disgusting. It is omnipresent and indestructible, and accompanies man from birth to death. Perhaps it is the guardian of her life on Earth, but can also become a "plague of the XXI century." And we do not assume what the ancient secrets and hidden forces is fraught with the damned and blessed... fungus! We encounter it all the time, but either do not notice or get rid of it. Man is too presumptuous to consider himself the master of the earth, in fact, the world belongs to the fungus. And if it should want to push people out of our habitats, it will do so.