The starship Intra-Path is under attack from a race of alien beings that have intercepted radio transmissions from the year 1970. The song they intercepted was about war and death. They now believe that all humanity needs to be eradicated before they do irreparable damage to the universe.
Captain James T Jirk and crew must convince them that music is just a form of creative expression, but these alien beings don’t understand creative expression. The crew goes back in time to bring the music of the ’70s to them directly, to save all humanity from destruction!