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?
When all is done, Kirk tells Spock to set course for their next assignment. Spock is at the science station on the other side of the bridge from the helm, where course and speed would be set. By naval tradition, the captain gives the first officer course instructions, who then relays those orders to the crew. Star Trek was inconsistent in following this tradition, but it was used in several episodes, including this one. See more
Captain's log, stardate 3289.8. I am faced with the most difficult decision of my life. Unless we find a way to destroy the creatures without killing their human hosts, my command responsibilities will force me to kill over a million people.
Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more