A 1960's science fiction action adventure series set in the twenty-third century based around the crew of the U.S.S. Enterprise, representing the United Federation of Planets (including Earth) on a five-year mission in outer space to explore new worlds, seek new life and new civilizations, and to boldly go where no one has gone before. The Enterprise is commanded by handsome and brash Captain James Tiberius "Jim" Kirk (William Shatner). Kirk's two best friends are Commander Spock (Leonard Nimoy) (last name unpronounceable to humans) the ship's half-human/half-Vulcan Science Officer and First/Executive Officer (i.e. second-in-command) from the planet Vulcan, and Chief Medical Officer Dr. Leonard H. "Bones" McCoy (DeForest Kelley).