Partly. The show incorporates elements of truth but also takes creative liberties to enhance the drama and entertainment value. So, it's a mix of real and fictional elements.
I don't know specifically as I haven't seen the movie. But likely, they are real - life inspired characters. It could be a hard - working farmer, a local store owner, or a community leader.
Well, not having watched it, I can only speculate. It could be centered around a particular industry in the Heartland such as farming or ranching. Maybe it shows the true story of a farmer who faced challenges like drought or pests but managed to persevere. Or it could be about a cultural aspect in the Heartland, like the preservation of a local art form or a unique way of life that was in danger of being lost.