For centuries, the Greys lay dormant beneath the soil, trapped in a magical slumber. One day, more than 500 years ago, they all simultaneously awoke—over five thousand dormant beings emerging from their prolonged sleep to ascend to the surface. The surface-dwelling races of this world were perplexed by the sudden appearance of the Greys, a name bestowed upon them on that fateful day. The Greys, emerging from their underground abode, had no recollection of the duration of their subterranean slumber or how they came to be buried beneath the surface in the first place.
Considered extraterrestrial to this world, the Greys' origins became more apparent as explorations of the caverns revealed massive petrified spell jammers—vessels of unfathomable size and powered by magic beyond the comprehension of the world's inhabitants.
Memory of their home world and the reasons for their departure is hazy for the Greys. They harbor a belief that they must have possessed superior technological prowess compared to the denizens of this world. Evidence of their advanced capabilities is reflected in the colossal stone vessels within the Underdark and their innate ability to craft sophisticated energy firearms known as "zappers." The construction of these weapons, although not fully understood, is an instinctual act for the Greys, more akin to muscle memory than explicit knowledge.
A notable aspect of the Greys' abilities is their manipulation of gravity. Deeming the gravitational force on this world weaker than that of their presumed home world, the Greys can wield gravity as a weapon, bending and manipulating the force as they see fit.
- from the publisher's blurb