Mulder and Scully are sent to investigate when a team of geophysicists stationed at a remote Alaskan outpost are killed by a parasitic alien life form.
A creature, possibly from Native American lore, is suspected of killing a man, bringing Mulder and Scully to the Indian reservation where the attack occurred in order to uncover its identity.
A group of loggers working in a remote forest unearths thousands of deadly insectlike creatures that paralyze and cocoon their victims. Scully, Mulder and a few others end up trapped there.