Denab IV is further from the system sun than its temperate sister planet, Denab, and continues to swing a little deeper into space with each passing year. Harsh wind storms sculpt its icy surface for most of its cycle, yet it is only in the coldest months that the glaciers and tundra are stable enough to allow travel on foot. Natives to the planet are known as the E`horani and they migrate every generation between the pockets of forest bordering lava flows. Their lives are often tragic as they fight the tundra predators for resources while their planet grows ever colder. Additionally, seismic activity can cause the lava to suddenly change course and set fire to a forest in which the E`horani find sanctuary. Their tree-top cities are ingenious, however, in that their nest-like shelters use very few resources and can be built in less than a day, but still provide stability and refuge against the harsh climate. The techniques the E`horani use to create these havens have been perfected over generations but were first learned from a now-extinct species of raptors.

The future of the planet itself is in doubt, as Denab IV continues to slide across the system and threaten its neighbors. There are current debates among the scientific community as to what precipitated the orbital degeneration, while local legend tells of a lost god who once illuminated the day and night sky that researchers believe refers to a one-time satellite.