A family adopts a runt of a dachshund from a shelter. Only time will tell if little "Shelly" and her new family are up for the challenges of entering the nation's greatest wiener dog race, Wienerschnitzel's "Wiener Dog Nationals."

The Jack Family is at it again, as they enter the International World of Wiener Dog Racing. The kids sneak away to enter Shelly in the Internationals, and find themselves caught in a devious plot by Mrs. Merryweather that may change wiener dog races forever! Can little Shelly, the champion dog from the US, really take on the World?