The campaign's main setting is in the south of Britannia around 450AD, shortly after the roman legions left the island.

Despite the departure of the roman legions the influence of the empire is still very much present. Cities bear the stamp of roman architecture and society is still largely structured according to a roman model. Despite this the cities are slowly decaying and being abandoned for rural .

With the romans new religions entered Britannia. Roman gods such as Jupiter, Mercury and Vesta still have followers among the roman-britons. In rural areas the old faiths are still dominant. But the main religion gaining increased influence is christianity despite finding itself in constant conflict with the defenders of the old faiths. Unlike the romans the christian faith fervently seeks to dominate the religious landscape through conversion of the native population and supression of the old faith.

The island is divided in a series of kingdoms loosely united under the rule of a high king after emperor Constantinius is executed on the mainland. The kingdoms themselves are divided into tribal regions overseen by nobles.
It is a tumultuous time in which irish, pictish and anglo-saxon tribes invade. The high king's function is as a warlord of sorts, organizing the defense where local armies are insufficient. While a hereditary function the nobles of Britannia have revolted in the past when they consider a high king ineffective or unworthy. More than once the high king has been brought down by revolutions led by nobles or peasants. It is a precarious position to be in. The current high king Britu resides in Durovernum Cantiacorum (modern day Canterbury).

Players will start in the kingdom of Dumnonia, though they may hail from other parts. Isca Dumnoniorum (modern day Exeter) is its capital city, a former roman city. Roman influence is apparent in the buildings.
Other cities of note are Durnovaria (modern day Dorchester), capital city of the Durotriges tribe and a sub kingdom sworn fealty to Dumnonia. The walled city boasts an 13 km aquaduct and an amphitheater. Lindinis (modern day Ilchester), site of a roman fortress
West of the capital city lie the moors (modern day Dartmoor), an area largely left untouched by roman influences and avoided by all but those from the region. Once a dense forrest much of the trees were cut down in prehistic times to make room for farms which were largely abandoned when the climate changed, turning the region into a clammy cold wasteland. Fairies, ghosts and monsters are said to haunt the moors. What villages remain dotting the landscape of Dartmoor are build on tors, granite outcrops, and make a living exporting granite, peet and tin.
To the east the region is overseen from Camelet castle (modern day Cadbury Castle), an ancient fortress until recently used by the roman legions in the area before their departure some 40 years ago. The leftovers of a roman legion is still holding Camelet but has lost contact with Rome and has intermingled with the local population.
North of Camelet lies Glastening, a bastion of the old faith. The Tor is rumored to hold a gateway to the other worlds and tunnels are said to lead down into the Underworld itself. Messianic Voices have sent envoys to the village but none have made it back. A prehistoric temple crowns the top of the Tor. During autumn and winter the area becomes an island due to heavy rainfall and the lake overflowing, with timber trackways allowing its inhabitants to come and leave.

Native people still identify themselves by the tribe they hail from but overall they can be divided in the following main population groups:
Briton: The original inhabitants of Britannia before the romans arrived
Celtic: polyamorous and polygamy. Celtic pantheon/Celtic Christianity.
Roman-briton: Those Britons that adopted the roman lifestyle or of mixed heritage.
Roman: Roman pantheon/Catholic.
Saxon: Migrants from modern Germany. Norse/Saxon pantheon.
Angle: Migrants from modern Germany. Norse/Saxon pantheon.
Jute: Migrants from modern day Denmark. Norse pantheon.
Sarmatian: Migrants from east Europe. Came with the romans are infantry.
Pict: Scottish. Little is known of the picts save they are fierce warrios who managed to keep the Empire at bay. They live behind the
Scotti: Scottish-Irish.