Nyx is an unclaimed planetary system situated at the border of an unusually dense and dark stellar cloud. It consists of an F-type main sequence star orbited by three planets and an asteroid belt. Due to the cloud's interference with navigational equipment, travel through the system is difficult and hazardous. The system's main settlement, Levski, located on a moon-sized asteroid in the Glaciem ring, is considered a haven for Humans who wish to live beyond the reach of United Empire of Earth (UEE) law.