Stardate: 43125.8 --Wesley loses a couple of the nanites that he was studying, which then multiply and evolve, finally reaching a collective intelligence.
Meanwhile, when they start feeding off of Enterprise’s computer chips, several systems failures begin to occur, and this delays a very important scientific mission. The visiting scientist, there to oversee this important scientific mission, then tries to destroy the nanities, to save his once in a life time spatial observation. Now the crew must fight the nanites attempts to take over the ship, and their attempts to seek revenge on the visiting scientist.
original airdate: September 25,1989 rating: 10.8 million
music: Theme song Feature music by Dennis McCarthy
Alien races: Nanites', El-Aurian
Trivia: Debut of new 2 piece uniform design, replacing the 1 piece jumpsuit design uniforms used in the first two seasons.