The Federation is in competition with the Klingons for an alliance with the inhabitants of Capella IV. The Capellans are a warrior tribe and there is dissension among them as to who to sign the mining rights treaty with. McCoy is familiar with their customs having once spent several months there. When a Capellan, who clearly favors the Klingons, stages a coup, Kirk, Spock and McCoy flee with the now dead leader's wife, who is about to give birth. Meanwhile, the Enterprise receives a distress call from a Federation vessel under attack and, with Scotty in command, leaves orbit. Written by
Did You Know?
For his first four appearances in the series, including this episode, Walter Koenig
wore a The Monkees
(1966)-style wig, which he absolutely detested. In one interview, he made joking and uncomplimentary references to that wig. See more
When Kirk and Spock use their communicators to create a landslide of rocks, we can see a small explosion directly before the landslide starts. See more
The last thing I'll want around is a ham-handed ship's captain.