When a diseased-ravaged body is found in the smouldering ruins of the DyMar genetic research lab, FBI agents Fox Mulder and Dana Scully fear that a deadly man-made plague is on the loose. As the agents investigating the X-files - cases that the bureau deem unsolvable - Mulder and Scully must pursue the truth wherever it leads, even into the labyrinthine corridors of the FBI... and beyond.