Dallas, Texas. A terrorist's bomb destroys a building. During their investigation, FBI special agents Fox Moulder and Dana Scully encounter a conspiracy that is more dangerous than anything they have encountered before. Risking their own lives and careers, Moulder and Scully do everything to destroy a deadly virus that can infect all life on Earth and, possibly, of extraterrestrial origin. In this pursuit of the truth, they come across a mysterious syndicate made up of powerful people who will stop at nothing to keep their secrets. Syndicate men pursue agents in a Texas cave, FBI headquarters and a secret base in Antarctica that holds the most important secret...