Together with Doublett, Captain Virgin travels by balloon to the Northwest frontier. His mission: to save India for the Empire - and outwit the diabolical plans his adversary, the thoroughly evil Karl Von Brauner.
During a mission to St Petersburg. Virgin finds a Prince who dreams of becoming Emperor of India. In a mission filled with intrigue and mystery, the agent puts paid to the man's dreams and once again foils Von Brauner's aspirations to greatness.
When the Entente Cordiale is threatened by von Brauner's attempts to have the Duke of Albany killed when he visits the opera, Virgin and Mrs Cortez, impersonating the Duke and his wife, find themselves held prisoner by a group of Chinese white slave traders.
Captain Virgin travels to Arabia alone, to meet a cruel usurper face to face - and finds himself held prisoner bat Van Brauner and Klaus Stiebeck. who puts him through their 'ordeal by animal': a deep pit filled with venomous reptiles.
An old British scientist and his daughters are trapped in their Amazon jungle fortress by Von Braunner, who's leading the local Indians against them. All looks hopeless until Virgin, Doublett and Mrs. Cortez arrive.
German agents seek to steal a chemical formula that causes temporary paralysis from a Swiss scientist, so that it can be sold to a sinister Chinese warlord. While Virgin and Mrs. Cortez's attempt to stop them, they are captured.
Von Braunner has arranged for an assassin to kill a Serbian noble and make it appear a better known killer-for-hire,Le Mec, is responsible. Virgin and Mrs. Cortez in turn enlist his help to thwart the plot.
In a strange "Shangra-La" type kingdom, their blonde goddess must marry a white warrior, as per an ancient legend,which Von Braunner intends to exploit, but Virgin comes on the scene and complicates things.
Anarchist masterminds are brought to England by VonBraunner as part of a two-pointed plot to assassinate King Edward and the visiting Kaiser Wilhelm, and steal the crown jewels from the tower of London.
Von Braunner kidnaps a scientist and forces him to look for oil in Texas, on the land of a trigger happy ranch boss named Big Jack, who has a nearby cowboy town under his heel. Virgin and Doublett are diverted there looking for the Colonel.
Sightings of flying machines at a strange old Scots castle inspire Von Bruanner (now with a cowardly Italian princeling in tow) to try and seize the craft from the prickly laird of the manor, who is also an eccentric inventor. Virgin, Doublett and Mrs. Cortez are sent to secure the machine for the U.K. first.