When Sara takes Beethoven to spend summer vacation with wacky Uncle Freddie in an old mining town, the mischievous canine "digs up" the missing clue to a legendary hidden fortune of Rita and Moe Selig. Now everybody wants to be the dog's best friend as his discovery unleashes a frenzy of treasure hunting among the community's cast of kooky creatures. With help from Uncle Freddie and Garrett (a friend or maybe more), Sara and Beethoven try to help uncover a secret that has been in the crazy little town for years.
Dave Thomas
as Freddy Kablinski
Faith Ford
as Julie Dempsey
Daveigh Chase
as Sara Newton
Tom Poston
as John Giles / Selig
Katherine Helmond
as Crazy Cora Wilkens
Sammy Kahn
as Garrett
Richard Riehle
as Vaughn Carter
Clint Howard
as Owen Tuttle
Kathy Griffin
as Evie Kling
John Larroquette
as Mayor Harold Herman
Rodman Flender
as Moe Selig
Rick Dean
as Stu