Brief description
Spock has been sent on a mission to activate a cold fusion reaction inside a volcano in order to stop a volcano from erupting on the planet Nibiru and killing the natives who are on a lower level of technological development (tribal society). At about 06:30 the screen shows, among other things, what looks like Spock's vitals while he is in the volcano, which means that either his suit or the ships systems, or both are monitoring him.