In 1859, families discover the lure of the Old West as they settle in territories from Wyoming to Kansas. Meanwhile, a gruff cowboy finds himself on the run with a prostitute and a young boy after killing a fellow gunman.

Kevin Costner doesn't lack for ambition as he sketches this frontier saga across the widest of canvases, but Horizon's first chapter proves too diffuse in scope for it to satisfy as a self-contained endeavor.

Horizon doesn’t disappoint as a saga: a long, detailed American tale with epic scope that will likely elate history enthusiasts and those seeking sweeping cinematic landscapes.

'Horizon: An American Saga - Chapter 1' is ambitious with stunning cinematography and epic scope. Praised for historical accuracy and Kevin Costner's performance, it faces criticism for disjointed storytelling, slow pacing, and lack of cohesive narrative. Some suggest it fits better as a TV series due to its length and multiple storylines. The abrupt ending lacks resolution, though many remain hopeful for future chapters, anticipating a more connected and engaging story.