But they're way in advance of us or the Gorn. These folks don't serve a universal Deity however. The Metrons look like our conception of angels in western tradition. Whoever wins gets to take his ship and crew home and the other gets destroyed. He's facing a Gorn, a reptile looking creature that's big and slow and strong. If I was laying odds I wouldn't give much chance for Captain Kirk's survival. Single combat without the use of their futuristic weapons though. They whisk the captain of the alien ship and William Shatner down to an uninhabited earth like planet for single combat. But the whole thing is halted by a super race known as the Metrons.
Some aliens have destroyed a Federation colony with a Pearl Harbor style attack and the Enterprise is in pursuit.