This is the one about the planet sized amoeba that wants to eat the Enterprise. When we come in the Enterprise is heading for an R&R shore leave to compensate them for some extreme duty they’ve been performing. Kirk gives a lecherous leer at one of his female yeomen who is passing by.
But suddenly Spock suffers a spasm and upon being interrogated by Kirk he tells the bridge onlookers that he telepathically experienced the death of the four hundred plus Vulcans aboard the Star Fleet ship blah blah blah. Kirk sends Spock to sick bay for McCoy to harass Spock over his inexplicable extra sensory perception across light years of distance.
Meanwhile Star Fleet preempts the shore leave and tells Kirk to investigate the loss of the Vulcan star ship and the mysterious silence of a solar system nearby. So, the Enterprise investigates and finds that the solar system is dead. And in the path of the missing Vulcan ship they find an inexplicable black zone in space. And of course, since they’re idiots, they fly into it. Now they’re trapped in the zone and can’t get out. They’re pulled toward the center of the zone and just for good measure, the zone is a negative energy field where both the ship’s energy and the humans’ life force are being slowly depleted. Kirk becomes irritable and fatigued and starts snapping at Spock and Scotty because they can’t provide much information on what is happening or how to escape. Finally, they see what is at the center of the black zone. There is an 11,000-mile long amoeba that Spock informs them is made of protoplasm. Oh, come on!
So now Spock and McCoy bicker over which of the two of them should be sent in a shuttle craft into the nucleus of the cell to provide scientific info on the organism and then die tragically as the creature absorbs him. Kirk agonizes embarrassingly then picks Spock to go. Spock sends a garbled transmission in which the key word to describe how to destroy the creature is unintelligible. Now Spock is dying in the amoeba and Kirk is inspired by McCoy’s maunderings about how the Enterprise is like a germ inside the cell to think of the word antibody which for some reason makes him believe that Spock had said antimatter would destroy the cell.
They put an antimatter bomb inside the nucleus and as the timer is running, they beat a pathetically slow retreat due to their low power reserves. They detect Spock’s shuttle craft and grab it with a tractor beam. Spock calls them and warns them that wasting power to save him is too risky. McCoy tells him to shut up and allow them to rescue him. Spock replies, “Thank you Captain McCoy.” They run out of power right before they escape the cell membrane but the bomb throws them clear including Spock’s shuttle craft. Kirk breathes a sigh of relief and begins to contemplate the debauches he will commit on his shore leave.
Okay, a planet sized blob of protoplasm. I could be wrong but wouldn’t gravity render all but an outer layer of such a mass into nothing but steam and some trace elements? Couldn’t it have been something like a cell but compounded of materials that could possibly have existed on such a scale? Ah, who am I kidding, this is Star Trek, anything goes.
So, peevish low-energy Kirk is mildly amusing. Spock and McCoy bickering over who is the likelier sacrifice in the shuttle craft is sort of fun. And there is a giant amoeba on the screen for part of the show. Let’s be kind and call this a 7 // 3.