The Enterprise traces a virus-like outbreak that seems to be traveling in a direct line across a planetary system. The next planet is home to Kirk's brother Sam, his sister-in-law and their young son. The Enterprise arrives too late however for Sam. They find flying jellyfish-like creatures that attach themselves to humans. They take over the victims nervous system forcing them to bend to their will. Spock finds a weapon to use against the creatures but it leaves him hopelessly blind.
Did You Know?
The Deneva outdoor scenes were shot at the headquarters of TRW Space and Defense Park in Redondo Beach, California (currently the Northrop Grumman Space Technology headquarters). The establishing shot of Kirk's brother - Sam's lab was a building on the campus of UCLA, and the entrance of the building was the cafeteria at TRW. See Google Earth for location. See more
In the beginning scenes on the bridge after Uhura raises Kirk's sister-in-law, Uhura is not sitting at the communications station which places Spock's science station to her left; Spock's station can be seen in the background to her right which would place her at the navigation sub-station which is to the left of the science station. When she loses Aurelen's signal and Kirk walks away, she is now sitting at her correct station to the right of the science station. See more
Unusual eye arrangement. I might've known he'd turn up something like that.
What's that, doctor?
I said, please don't tell Spock I said he was the best first officer in the fleet.
Why thank you, Dr. McCoy.
You've been so concerned about his Vulcan eyes, Doctor, you forgot about his Vulcan ears.
Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more