In the distant future, colonists seeking a return to a simpler lifestyle set out to inhabit the Earth-like planet O-RFG.076. There, far from the strictures and the technological marvels of the oligarchical Novan Federation, the colonists built settlements that were idealized versions of the cities of Old Earth in the centuries before space exploration. They renamed the planet "Tranquility" and governed it from its capital city of Adamantus as a confederation of commonwealths. They lived peacefully for nearly two centuries until their world drew the attention of interplanetary tourists
--- and inevitably, of the Novan Federation.

Now the planet has suffered a catastrophic environmental disaster, which has necessitated a forced evacuation. As the last stragglers are rounded up and with the Federation's troopers anxious to depart, a small spacecraft, long thought to have been lost while on a diplomatic mission, has inexplicably reappeared and is in orbit around Tranquility. As an agent of the Novan Federation, you have been ordered to board the non-responding and presumably derelict vessel to investigate. What you discovered on the spacecraft compels you to journey to the City of Adamantus below.