A former architect Frank Киттридж departs lifelong punishment for murder of dealer, selling drugs to his son. Therefore, when him a private space company owning prison offers to a transaction, he consents.He was chosen, to help to build the first permanent base on Mars. Unfortunately, his comrades are similarly guilty of the crimes, as well as he, and he will have to learn to trust them, if they want to obtain success.As prisoners conduct works on deserted and frozen Mars, accidents are multiplied. While Frank does not begin to suspect that it is not accidents.Among them there is a killer, and all of them - suspected.