Before Blake & Mortimer: The Fiery Arrow

The Marduk expedition has returned victorious to Norlandia, bearing a precious sample of Uradium. Now the professor can test his revolutionary U Ray's potency when combined with the miracle ore. But Austradia, the old enemy, won't take this lying down. So the dastardly Captain Dagon didn't succeed in stopping Marduk from finding the Uradium deposit? No matter! The Imperial Austradian Army will simply take possession of it in a military operation - and who cares if that's where Prince Nazca's people live?