Gaius Valens dreams of driving the Saxons from Britannia. Those plans must wait as a new threat emerges, something deadlier than any invader. Valens must ally with a bitter enemy or else rogue alchemy could consume all of Britannia. -----------------------------------------------------------------------------------------------It is 478 A.D. and Britannia is in chaos. The Empire and her legions have abandoned the island, leaving the inhabitants surrounded by enemies. Now, on an island already being overrun by Saxon invaders, a darker threat emerges. Rogue alchemists, once held in check by Imperial agents, are free to experiment. Some alchemists create dangers out of ignorance, while others deliberately design new, terrifying weapons. Gaius Valens leads a handful of Romans and Britons who are willing to fight to protect their families and Britannia. Even when facing Saxon armies, exotic beasts and deadly machines, they won't give up. Because they have one crucial thing that the alchemists and Saxon invaders don't--the long lost Imperial airship, the Octavian.