Warner Bros. has announced the Horizon: An American Saga Chapter 1 Max release for the upcoming streaming debut of Kevin Costner's latest Western epic drama. This comes after more than a month since the film's theatrical release.

"In the great tradition of Warner Bros. Pictures' iconic Westerns, Horizon: An American Saga explores the allure of the Wild West and how it was won – and lost – through the blood, sweat and tears of many," the synopsis reads. "Costner's ambitious film adventure spans the four years of the Civil War, from 1861 to 1865, and takes audiences on an emotional journey across a country at war with itself, experienced through the lens of families, friends and foes all trying to discover what it truly means to be the United States of America."

Horizon: An American Saga Chapter 1 is set to make its streaming debut on Friday, August 23, exclusively on Max. Since its world premiere at the 2024 Cannes Film Festival, the film has received mixed reviews from critics. The film currently holds a 70% audience score on Rotten Tomatoes, based on over 2,500 verified reviews.

The first installment is directed by Costner, who co-wrote the screenplay with Jon Baird. The film stars Costner, Sienna Miller, Sam Worthington, Giovanni Ribisi, Abbey Lee, Will Patton, Jena Malone, Michael Rooker, Danny Huston, Luke Wilson, Jeff Fahey, Isabelle Fuhrman, Ella Hunt, David O'Hara, Owen Crow Shoe, Tatanka Means, Tim Guinee, Scott Haze, Tom Payne, Alejandro Edda, James Russo, Jon Beavers, Jaime Campbell Bower, Michael Anganaro and more.