With her older brother, Josh, off at college, and her yuppie parents obsessed with the new baby, young Andrea joins the junior high baseball team to escape the tedium of her home life. She's not very good, but luckily her sports-inclined golden retriever, Buddy, is a natural. Buddy also makes the team and becomes the star player. When the team gets into the championship game, a pair of zany scientists traveling in a laboratory inside a mobile home kidnap the pooch and his offspring in the interest of their experiments to clone sports-prone animals.