The council on Gideon, a non-federation planet, agrees to a delegation of one: Captain Kirk. But when Kirk beams down to the co-ordinates supplied, he finds himself not in the Gideon council chamber but back on the Enterprise, and very alone. His entire crew has disappeared!. After searching the ship from top to bottom, Kirk eventually encounters a beautiful young woman named Odana (Sharon Acker) who hasn't the foggiest how she got there. What in the blue blazes is going on?
Sadly, the answer to this question isn't very satisfactory.
It turns out that Kirk has been beamed down to an exact replica of his starship on Gideon, designed to confuse the captain while Odana, actually the daughter of Gideon Ambassador Hodin, tries to seduce him (not difficult - this is old horndog Kirk we're talkin' about!). It transpires that the Gideons are after the meningitis virus in Kirk's bloodstream, which they intend to use as a means of population control on their overcrowded planet. The duplication of the Enterprise seems like a pointless endeavour since Kirk could just have easily been beamed down to a secure room with armed guards, thus saving the Gideon's a lot of time, trouble and materials (where they got such detailed plans of the Enterprise is another matter).
Also, seeing as the overcrowding problem stemmed from the Gideons' sanctity of life, it seems like an awfully strange move to now introduce a nasty virus into the population in order to whittle down the numbers. It makes the carousel in Logan's Run seem like a humane answer by comparison.
4/10. It disnae make any sense, Captain.