The exploits of FBI Special Agents Fox Mulder and Dana Scully who investigate X-Files: marginalized, unsolved cases involving paranormal phenomena. Mulder believes in the existence of aliens and the paranormal while Scully, a skeptic, is assigned to make scientific analyses of Mulder's discoveries that debunk Mulder's work and thus return him to mainstream cases.
Mulder and Scully investigate the murder of a city official, a crime that doesn't appear to have been committed by human hands. Meanwhile, Scully faces deeply emotional feelings about the child she gave up for adoption.