Who said that a happy future for humanity is impossible? The year is 2312. People have mastered the planets and asteroids of the solar system, economic inequality has been defeated, a fair distribution of goods is controlled by a computer system. And suddenly the universal paradise of the “ideal future” begins to burst at the seams. Space sabotage destroys Terminator, a beautiful Mercury city on rails. A native of Mercury, designer of new worlds Swan Er Hong, who miraculously survived, flies to another planet and... witnesses the next sabotage. A new planet - and a new nightmare. Swan Er Hong cannot stay away. She gets involved in a deadly investigation...