In the center of history there was a distant future. People dirtied Earth so that it became easier will move to Mars. Here the cities similar to terrestrial were built and fenced with the dome-shaped protective field. Once, the sandstorm of unprecedented force destroyed a dome of the Martian New York and, respectively, the city. Now residents of the Martian Los Angeles are forced to solve a problem of strengthening of a dome before the storm reaches them.