The action in the movie originates in the 21st century. By that time, the population of the earth had already mastered interplanetary flights and decided to take advantage of this achievement, that is, to consume the natural resources of other planets for the needs of the world's population. On one of the moons of Jupiter, the asteroid Io, titanium deposits were discovered. In order to obtain it on an asteroid, a colony was built, in which two thousand people worked, who lived not in the best conditions, but who brought a big income to the manufacturer. Since labor productivity was high and yielded excellent profits, those responsible for living conditions and security of workers had virtually no problems. This lasted until Marshal O'Neill arrived in the colony, who immediately after arrival revealed that people were going crazy at work and committing suicide. He tries to find out the cause of this unusual phenomenon, but faces a confrontation between the manager and the misunderstanding of the others. O'Neill thinks that the case here is unclean and the law is not respected, and begins to independently search for the guilty, exposing themselves to the same dangers.