Vadik Sitnikov saved a girl named Maya from her pursuers. And he received from her an old notebook with a leather cover for safekeeping. Then Maya disappeared, not even leaving a phone number, and Vadik showed the notebook to the second-hand bookseller. And it turned out: this thing is priceless! With his own hand, the scientist Nikola Tesla wrote down calculations in his notebook on how to save the Earth from a cosmic catastrophe that should occur in 2012. At all costs, it is necessary to transfer information into the hands of specialists - and not gangsters who are hunting for it...