Parker traverses through the Ultor complex, eliminating any resistance Ultor throws at him, and even (with the help of Orion, a high-ranking Red Faction member) kidnapping a high-ranking Ultor administrator, Gryphon, for Eos, leader of the Red Faction. Parker learns from Gryphon about Dr. Capek, who created "The Plague". Capek has been experimenting with nanotechnology, and the Plague is a side-effect of injections at the miners' annual medical checkup. Hendrix directs Parker to Capek's secret underground laboratory, where he and Eos meet up and take down Capek. Before Capek dies, he tells Eos how to cure the Plague. After sending a distress call to the Earth Defense Force, Parker stows away on a shuttle to an Ultor space station in Martian orbit to deactivate a laser defense system.