Episode Title: "PLATO'S STEPCHILDREN"
Production Number: 67
Original Air Date: 11-22-68
Stardates: 5784.2, 5784.3
The U.S.S. Enterprise answers a distress call from an unknown planet that is rich in kironide deposits, a very rare and long-lasting source of great power. The residents of the planet escaped from their native star, Sahndara, millennia ago, before it went nova; they call themselves Platonians, after the ancient Earth philosopher Plato, whom they met on Earth before coming to this planet to create a Utopian society based on ancient Greek civilization.
Dr. McCoy works to treat the Platonian leader for an infection, since they have no doctors of their own. The Platonians are the result of a mass eugenics program instituted while still on Sahndara, and live for thousands of years; they have developed psychokinetic powers since arriving on this planet, and intend to use their mental powers to force McCoy to stay and take care of their medical needs. McCoy learns that the kironide in the planet's environment has given the Platonians their powers, and injects a double dosage into Kirk and Spock. They are able to overpower the Platonian leader, and leave with the doctor, warning the Platonians that they know how to reproduce the mental power if the Platonians try attacking another starship.
Factoid: The Sahndarans arrived on Platonius 2,500 years ago.
Guest Characters: Nurse Christine Chapel
Alien Races: *Sahndarans
KEY: [brackets]=illusions *star=first appearance