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.
When a series of unexplained vicious animal attacks strikes his community, Sheriff Jim Tanner and his assistant Barbara trace them back to a Dr. Hyde, a former military researcher whose government funding for a dinosaur cloning project was cut. When the Pentagon discovers Hyde obtained foreign backing to continue his experiments, they send in a strike team to save Tanner and Barbara and stop Hyde.
Ping is a chihuahua rescued from the pound by nearsighted Ethel, who thinks he's a cat. When a pair of bumbling thieves try to break into Ethel's house to steal the money they think she has stashed away, only Ping can foil their plans.
