I went to see "Horizon: An American Saga chapter one"
I like the movie. It is three hours long, and a little patience is needed. But I think the character development is great. Without posting any spoilers, I will just say the movie does a great job of showing the tragedies and heartbreaking moments on the trails to the West.
Thankfully, it doesn't degenerate into the soap opera tripe that Yellowstone has become. Some people have criticized the multiple storylines, but it worked for me and never seemed rushed. It simply shows a common story through many different eyes.
My wife didn't like it as much. I think it was the three-hour length that affected her opinion.
But I am planning in watching all four chapters as they are released.