The movie was released in 1977 and stars Charles Bronson as Wild Bill Hickok and Will Sampson as Crazy Horse. The White Buffalo is directed by J. Lee Thompson and is based on the novel by Richard Sale.
In the film, Wild Bill Hickok is haunted by a recurring dream of a massive white buffalo, which he believes to be a sign of his impending death. He sets out on a quest to find the creature, and along the way, he encounters various characters from the Wild West.
The movie has been described as a mix of horror, western, and fantasy. Along with the white buffalo, the film features other mystical elements, such as a witch who possesses people and turns them into killers.
The White Buffalo received mixed reviews upon its release, with some critics praising its unique blend of genres, while others found it overly convoluted. However, it has since developed a cult following and is now considered a classic of the western-horror sub-genre.