Lucian Aurelianus is a descendant of Roman emperors and British kings alike, as well as being Arthur’s cousin. He receives an urgent summons to Camelot from Merlin only to arrive after the slaughter of the Battle of Camlann, in time to see Arthur’s body taken away to Avalon. Soon afterward Lucian’s brother, Constantine, claims the right to be High King of Britain—and exiles anyone who challenges him, including the surviving Knights. At the same time, the sons of Arthur’s nephew and mortal enemy, Modred, have joined forces with the Saxons, along with soldiers from a reborn Roman Empire with designs on Britain, for a final attack against Camelot.
Lucian decides he must stay to help Merlin and the Knights—and his increasingly despotic brother—if anything of Arthur’s dream is to survive. Ultimately he will do whatever it takes to keep Camelot alive, even when that means challenging the armies of southern Britain, enduring Saxon slavery, and the possibility of taking what is left of Camelot and leaving Britain behind forever.