
The iconic series "Star Trek" follows the crew of the starship USS Enterprise as it completes its missions in space in the 23rd century. Captain James T. Kirk -- along with half- human/half-Vulcan science officer Spock, ship Dr. "Bones" McCoy, Ensign Pavel Chekov, communications officer Lt. Nyota Uhura, helmsman Lt. Hikaru Sulu and chief engineer Lt. Cmdr. Montgomery "Scotty" Scott -- confront strange alien races, friendly and hostile alike, as they explore unknown worlds.

Kirk, Scott, McCoy and Uhura accidentally switch places with their malevolent counterparts from a parallel universe.

The Enterprise officers investigate a primitive society that seems to exist to serve a godlike machine; guest David Soul.

Only the Enterprise and the battered Constellation stand between an ancient weapon and devastation; guest William Windom.

On a mission to 1960s Earth, the Enterprise finds a human agent (Robert Lansing) working for aliens; guest Teri Garr.