A mysterious bull named Jacques La Beef arrives in town who has all the women drawn to him. Moo and Dakota are suspicious of him, especially after Miss Lily is robbed of the items in her new safe by The Masked Bull in a plot to discredit Jacques La Beef (who is secretly a notorious con artist named Barney Finkleberg).

During an attack on the stagecoach bound for Cow Town, Puma sees that The Masked Bull is actually Sheriff Terrorbull after Boothill Buzzard accidentally unmasks him. In order to save his identity after his attempt on Puma's life is thwarted by J.R., Sheriff Terrorbull must break his younger brother Horribull out of Sinquitten Federal Prison to pose as The Masked Bull and fool everyone.

No one cares that it is Moo Montanta's 10th anniversary as marshal. Then, Moo receives a telegram from Bessy Bluebell from his hometown of Miller Glen where the retiring sheriff T-Bone wants Moo to take over even at the time when Bat Blastagun and his henchmen are causing trouble in Miller Glen. Now Moo must decide between Miller Glen where he is beloved by the townsfolk and Cowtown.