On an urgent medical emergency, Kirk, Spock and McCoy encounter an alien society that had once flourished on earth during the time of Plato. Since reaching their current planet, they've developed psychokinetic powers while also losing their bodies' ability to combat even the simplest infection, making the need for a physician newly apparent. When Dr. McCoy declines their invitation to stay, they begin to make sport with Kirk, Spock, Nurse Chapel and Lieutenant Uhura using their psychokinetic powers. Written by
Did You Know?
Network executives ordered the director to shoot a take where he and Uhura did not kiss, just so it would be available. However William Shatner
crossed his eyes at the camera making the take useless. See more
During the performance by Uhura, Nurse Chapel, Kirk and Spock one of the platonians refers to "Cupid" a roman deity, that is incorrect because in Greek mythology the name of the deity is "Eros". See more
Anyone coming down here, and remaining long enough, would acquire the power.