Constantine III. Rex Britannorum

407 AD - Britain is now in chaos, abandoned by a Western Empire
unstable and besieged by hordes of barbarians threatening its borders.
Exasperated, the people cries out for leadership after the death of
Magnus Maximus, the last great to rise against the Theodosian dynasty.
The troops elevate several soldiers to the purple, causing them to fall shortly thereafter. Only one of them, Constantine III, will succeed in uniting all Britons under himself, involving them in his project of total reform of an empire now dying and destined to disappear.
From the misty, dark seas of the North, Constantine will land across the Channel, shaking up the empire in an attempt to make Britain the epicenter of a new world, founded on the ashes of Rome.