Overview
Scooby-Doo! Shaggy's Showdown is a 2017 direct-to-DVD animated western comedy mystery film, and the twenty-eighth entry in the direct-to-video series of Scooby-Doo films. It was released digitally on January 31, 2017, and on DVD on February 14, 2017.
Plot
Shaggy's distant cousin Tawny invites the Mystery Gang to visit her ranch in Sorghum City, a town that has recently been terrorized by vandalism, apparently caused by the ghost of Dapper Jack Rogers (Shaggy and Tawny's ancestor). When the gang arrives, everyone who encounters them initially flees, believing Shaggy is Dapper Jack. Tawny and her neighbor Rafe show the gang Jack's picture, revealing Shaggy looks just like his ancestor. They also tell the gang the legend of Dapper Jack, a famous horseman and roper turned outlaw. Wearing bandanna masks, Jack went on a crime spree, before he was reported killed in the desert by then-Sheriff Rufus Carmichael. This legend brought tourists to the town, before the ghostly attacks started driving people away.
The gang decides to stop Jack, and moves into the ranch. They meet their fellow guests, including famous preteen musician Buddy G (who has severe equinophobia) and his family. That night, Dapper Jack appears, shoots green fire from a gun, and escapes. Fred finds evidence of boric acid, which caused the green flames. Tawny explains that the Black Rattler Land Company has been buying up businesses that were foreclosed after the ghost drove their profits down; her own ranch is now in imminent danger of the same.
From Wikipedia (CC BY-SA 4.0).