On a mission to establish diplomatic relations at Star Cluster NGC321, Kirk and Spock beam down to planet Eminiar 7 to learn that its inhabitants have been at war with a neighboring planet for over 500 years. They can find no damage nor evidence of destruction but soon learn that their war is essentially a war game, where each planet attacks the other in a computer simulation with the tabulated victims voluntarily surrendering themselves for execution after the fact. When the Enterprise becomes a victim in the computer simulation and ordered destroyed, Kirk decides it's time to show them exactly what war means. Written by
Did You Know?
First episode to establish the United Federation of Planets as the principal service to which the Enterprise operated under. In previous episodes, vague and often conflicting references were made to this service. Such references included "Space Command", "Space Central", the "Star Service", and "United Earth Space Probe Agency" (the latter even abbreviated as UESPA, pronounced by Capt. Kirk as "you spah" in the episode Star Trek: Charlie X
). UESPA would later go on to be the principal service to which the Enterprise NX-01 operated under on Star Trek: Enterprise
, since the Federation would not be established on that series until the final episode. See more
The Eminians attack the Enterprise with a sonic weapon. However, sonics would not be effective against an orbiting starship, as the vacuum of space (or high atmosphere) would not conduct sonic energy. See more
Captain James T. Kirk
Code 710 means that under no circumstances are we to approach that planet - no circumstances whatsoever.
You will disregard that signal, Captain.