Setting The game takes place in the
Crimson Skies universe, set in an
alternate history of the 1930s. In this fictional setting, increasing
sectionalism within the United States of America has caused the country to splinter into numerous
sovereignties, whereas in the southern sovereignty,
slavery had been reinstituted, and was a major driver of conflict between the established nation-states resulting in a constant state of war with one another, and thus an
interstate highway system never developed. This in turn caused the primary means of transportation to shift from the car and train to the plane and Zeppelin; consequently came the formation of
air pirate gangs who plunder aerial commerce over North America. As a result of the events surrounding the world of
Crimson Skies, advancements in technology within the game universe proceeded at a faster rate than actually occurred in the same era. Certain designs and technologies were created specifically for the game, some beyond the scope of actual 1930s technology, examples of which include remote-controlled rocket launchers, magnetic rockets,
weather control devices, and a
Tesla coil-like weapon. The game's aircraft were designed to be true to the era yet unique, with some models inspired from actual period aircraft or from the experimental designs of the
Luftwaffe. Arixo is a desert nation-state, formed from the remnants of
Arizona and
New Mexico. Due to its vast, desolate, and lawless expanses, Arixo has become a haven for bandit activity. The Navajo Nation is an isolationist and militant haven for the
Navajo Native American tribes that encompasses territory from the former states of Arizona, New Mexico, Utah, and Colorado.
Chicago remains an industrial city, while the "Lost City" is a complex of ancient ruins located deep in South America. Zachary's character was also modified to have a number of flaws and weaknesses in addition to his strengths. Nathan and his crew have another run in with the Ragin Cajuns when Thibodeaux steals Betty's plane, which prompts Nathan to destroy his pirate gang. Later, Nathan receives a distress call from Nathan's old friend Dr. Fassenbiender (
Neil Ross), who reports a break-in at his lab. He informs Nathan of what he believes had been the target of the attempted burglary: his plans to construct a
wind turbine, a device capable of artificially generating storms. He warns Nathan about Von Essen (
Charles Dennis), a scientist who had unsuccessfully tried to engineer a wind turbine for a German
superweapon earlier during the
Great War. Suspecting that Von Essen had been behind the break-in, Doc entrusts Nathan with the schematics for the turbine. Nathan and the Fortune Hunters with the aid of a pirate ship captain, destroy the hidden base of the "Hollywood Knights", a militia run by the "Nation of Hollywood" dedicated to stopping Sky Piracy in the surrounding land. They then receive a distress call from Doc who reports being under attack. When Nathan and the Fortune Hunters return to Fassenbiender's lab, they find it under attack by several planes and a heavily-armored zeppelin belonging to
Die Spinne, a mysterious faction with advanced weaponry. Upon destroying their zeppelin, its nose separates itself from the rest of the airship's wreckage and transforms into a spider-like walking tank. Although they repel the threat, they find that the attackers have still succeeded in killing the Doc. Nathan, along with Betty (
Tasia Valenza), Big John (
Wally Wingert), and the other Fortune Hunters, embarks on a campaign to find those responsible and have them "brought to justice." He and the Fortune Hunters travel to Arixo, seeking out a mine producing
titanium, the only material that could be used to build the wind turbine; there, they hope to gain clues as to the identity of Doc's murderer. They run into a road block, as to get to the mine they must cross Navajo Nation which has had its borders closed. The Fortune Hunters retrieve a sacred statue and return it to the Navajo as a show of good will. Nathan also passes three tests set by the Navajo to prove his worth. Together they all continue to the mine, and discover that the mining operation is controlled by the Red Skull Legion, headed by a man named Khan, who Nathan personally knows. Nathan then proceeds in destroying the Red Skulls and a giant mechanical worm created by Die Spinne. With the knowledge that the Red Skulls are working with
Die Spinne, the Fortune Hunters proceed to
Chicago, which is the Red Skulls' home base. When Nathan goes to confront Kahn, he and Betty are attacked. Betty is captured and Nathan escapes in a hijacked Red Skull plane. Nathan and the Fortune Hunters ally themselves with the DeCarlos, a Pirate gang battling Kahn for Chicago. After several clashes with the Skulls, Nathan rescues Betty and confronts Kahn (
Keith Szarabajka) about his connection to Von Essen. Kahn reveals to Nathan that he had struck a deal with
Die Spinne: in exchange for the titanium
Die Spinne would help him destroy the DeCarlos, but Von Essen had gone back on their agreement, and begun using him to collect information. Kahn also discloses that
Die Spinne is preparing to attack Chicago. Joining forces, the Fortune Hunters and Red Skulls successfully defeat Von Essen's invasion force (spearheaded by an enormous zeppelin capable of "eating" other zeppelins by forcing them through an opening in its hull filled with various cutting and crushing implements). During the ensuing victory celebration, however, Maria betrays Nathan and steals the blueprints for Doc's wind turbine. The Fortune Hunters track Maria's movements southward to a "Lost City" in South America, which they identify as Von Essen's principal base of operations. Nathan infiltrates the base and there witnesses Maria and Von Essen have a falling out, following which Von Essen kills her. A firefight then ensues between Nathan and Von Essen, during which Von Essen reveals his plan to use the
Starker Sturm —his completed wind turbine weapon—to force Chicago and eventually all of North America under his fascist rule. Von Essen activates hidden explosives causing the hide out to collapse. Nathan escapes but the Pandora is damaged by debris in the explosion and Von Essen escapes. After repairing the Pandora, Nathan and the Fortune Hunters return to Chicago and find it already besieged by
Die Spinne. The Fortune Hunters and the Red Skulls once again join forces to stop the invasion. Von Essen then appears in the
Starker Sturm, and begins to attack Chicago's vital commercial and governmental structures. Nathan destroys the war machines' power turbines causing it to explode, killing Von Essen in the ensuing explosion. As the game ends, Khan invites Nathan and the Fortune Hunters to a party to celebrate, saying he'll call ahead and tell them to put the drinks on ice. Remembering how the whole ordeal started, Nathan declines, saying that he is going to stay away from the gambling tables for a while. ==Development==