The Enterprise is ordered to clean up the aftermath of a doomed colony on Omicron Ceti III, a planet under constant irradiation from deadly Berthold Rays. Upon arrival, however, the colonists aren't only alive but in perfect health, with no desire to leave their new world. They are in fact under the influence of plant spores which not only keep them in good and improved health but simultaneously keep them in a placid state of happiness and contentment. Mr Spock reacquaints with Leila Kalomi, an old friend who had been (and still is) in love with him. She leads Spock into being affected by the spores, and he is thereafter, for the first time, able to express love for her in return. Eventually the entire ship's crew is affected, leaving Kirk alone to wonder how he can possibly rescue them from perpetual bliss. Written by
Did You Know?
One of a few times in the series where Spock is called a Vulcanian rather than simply Vulcan. See more
Sulu says he wouldn't know the danger if it were "2 feet away" from him. It is repeatedly established that the Federation and Starfleet use the metric system, not the feet system. See more
Well, that's the second time man's been thrown out of paradise.
Captain James T. Kirk
No, no, Bones, this time we walked out on our own. Maybe we weren't meant for paradise. Maybe we were meant to fight our way through, struggle, claw our way up, scratch for every inch of the way. Maybe we can't stroll to the music of the lute. We must march to the sound of drums.