Against a Crooked Sky

I watched this movie on TV so many years ago that I cannot now be certain of all the details, such as how many times I have seen it. I still remember the theme song (that's how I found the movie, again, on IMDb).

There is nothing profound in this movie, but it is a respectable (if slightly cheesy) story about family devotion as a boy transforms into a young man. An Indian (sorry, Native American), sees the boy's sister rising from her bath in a creek, and kidnaps her. That's about as much nudity as this movie contains (we only get obscure views), which is the reason that I mention it specifically. The boy spends most of the rest of the movie trying to rescue his sister, aided only by a crotchety, old drunk, a task that overwhelms both of them. Someone must die, and the brother is determined to rescue his sister, even at the cost of his own life.