"Horizon: An American Saga — Chapter 1" marks Kevin Costner's return to the Western genre that launched his career nearly 40 years ago, serving as a prelude to a potential four-part saga. While the film showcases Costner's familiar macho archetype, the narrative falls flat with shallow storytelling and generic brutality interspersed with moments of hidden emotion. Costner's character, Hayes Ellison, joins a cast of characters on a journey to the small town of Horizon amidst Apache land conflicts in 1859. Despite efforts to add depth with water scarcity issues and character dynamics, the dialogue remains flat. While Sienna Miller and Michael Rooker bring some life to their roles, the overall film lacks cohesiveness and originality. As Chapter 1 sets the stage for future installments, audiences may find themselves hoping for a revival of Costner's former Western glory.