Scooby-Doo! Shaggy's Showdown

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.

Ranch hands Larry and Kyle start teaching some of the guests how to rope and ride horses, but Buddy is too scared to try. Fred also has difficulties, but Shaggy proves to be a natural. Velma has a horse dander allergy, so she and Daphne leave to visit a local museum. They find indications that someone took a diary, potentially belonging to Sheriff Carmichael, from the museum's storeroom.

Dapper Jack appears and starts a barn fire, setting a dangerous horse named Buckstitch loose, but Scooby manages to calm the bronco by speaking to him in animal language. After a couple false leads, the gang decides to investigate Jack's grave, but are confronted by Jack's very angry ghost. The gang borrows a canoe from a closed rental agency and flees downriver; they are nearly washed over a waterfall, but Shaggy is able to rescue them with his newfound roping skills.

With no other leads to follow, Shaggy decides to enter the upcoming rodeo and have Scooby secretly talk to the broncos so they will let Shaggy win the money for Tawny's mortgage. After Buddy opens the rodeo with a short concert, Scooby helps Buddy finally overcome his equinophobia, but forgets to talk to the broncos for Shaggy. Much to everyone's surprise, Shaggy is able to break a wild horse on his own and win.

The ghost causes a cattle stampede, putting Buddy's family in danger, but the Mystery Gang are able to save them and get some UV powder on the ghost. At the post-rodeo party, a blacklight reveals the powder on Kyle, exposing him as the "ghost", but not the mastermind. Finding a Black Rattler business card, Velma recognizes the unpopular font on it as the same one on Tawny's website, which Rafe designed for her. The gang also discovers Carmichael's diary where Rafe hid it.

Velma reveals to the crowd that Rafe is a secret Black Rattler executive. After starting the ghost scheme, he had discovered the diary; in it, Carmichael confessed that he had murdered the well-liked Dapper Jack out of jealousy, some time before Jack's death was actually reported. Carmichael then committed the legendary crime spree himself in disguise, to tarnish Jack's name. Rafe hid the diary so he could continue to use the false legend to frighten people.

Rafe escapes the lasso and steals Shaggy's prize money and attempts to flee in a stagecoach; but Scooby and Buddy G manage to get aboard and release two of Rafe's horses, causing him to crash. Shaggy rides up on Buckstitch; a concussed Rafe sees Shaggy standing over him, and he mistakes him for Dapper Jack, and apologizes.

As Rafe is arrested and the gang prepares to leave Sorghum City, Tawny promises to spread the truth about Jack, and thanks the gang for their help. The Mystery Machine drives away, and Shaggy and Scooby notice the real spirit of Dapper Jack watching them from a ledge; he tips his hat to them, before disappearing.

Cast

Frank Welker as Scooby-Doo and Fred Jones

Matthew Lillard as Shaggy Rogers

Grey DeLisle as Daphne Blake

Kate Micucci as Velma Dinkley

Carlos Alazraqui as Larry

Max Charles as Buddy G

Gary Cole as Rafe

Jessica DiCicco as Desdemona Gunderson

Tania Gunadi as Carol

Eric Ladin as Kyle

Nolan North as David and Dave

Stephen Tobolowsky as Andy Gunderson

Lauren Tom as Sharon

Melissa Villaseñor as Tawny Rogers

Kari Wahlgren as Midge Gunderson

Gary Anthony Williams as Cook

John Schwab as Dapper Jack Rogers