Daniel is a taking his daughter Jemima on a wilderness trip to show her the lands purchased for her future dowry - and in the process of marking trees impales his leg with a hatchet. (Try a set of china from Cincinatus' store instead?) While laid up the two are waylaid by hostile tribesmen headed by a British officer intent on quashing the upcoming Revolution on the frontier.
The first-half hour pleasantly spotlights Veronica Cartwright as Jemima, and in a departure from form allots her a surprising amount of female agency; she gets to shoot a bear and has to perform an operation on Daniel. (Fess Parker, to his credit, allows the hero to take a fall early in the series.) Allowing her to reach young adulthood on the series would have opened up a number of interesting storylines, and might even for allowed for a multigenerational continuation. Alas, not to be for reasons to be explained down the road.
The second half brings in two B-movie journeymen, David Brian as a British major who generally dislikes the frontier in general and Kentucky in particular, and his assistant Richard Devon as a local outlaw with a grudge against Boone. They and assorted tribesmen are trying to rally Native American support for the Crown's upcoming tiff with the colonies. Their depicted trek back to Fort Detroit is one of the rare small-screen instances when nighttime photography enhances the atmosphere.
Historically, the series here starts getting some small chronological bumps which will become major impacts further down the trail. Boonesborough and the surrounding area really had no run-up to the Revolution; the settlement began in 1775 about the same time as Lexington and Concord. Jemima's land is described as "Chenoa, along the Ohio" - the modern city of Chenoa is in central Illinois. Also, Brian's character is said to have attended the British military academy at Sandhurst - which did come into being until after the Napoleonic Wars.
But, its accurate to make the Wyandot villains of the week; they were active in Ohio and Michigan at this time, and did cross swords with the real Boone and his Kentuckians during the Revolution.
The series is strongest when it deploys (or attempts) a historical backdrop, and the result of such here is a well-constructed hour of action - largely due to Veronica Cartwright.