Russell, an undersized but big-hearted terrier, dreams of having a family of his own. After running away from his pet store, Russell gets taken in by The Ferraros, who discover their new pet pooch has incredible wrestling skills.

一位天真的科学家索尼娅在离开她的象牙塔之后，卷入了一场国际黑帮团伙与跨国能源企业的激烈交锋中，她在加拿大荒野地带进行秘密研究。与两位被贬谪的警察一起，她破坏了一场全球性的阴谋。然而，索尼娅的好奇心是要付出代价的。她失去了一切，并不得不决定是要逃跑还是要躲起来，或者去报复那个看似不可战胜的对手.

Josh is off to his first year of college and Buddy has stayed behind with Josh’s little sister Andrea and the rest of the family. Andrea, attempting to fit in with her Jr. High classmates, decides to join the baseball team and along the way discovers that Buddy is a talented baseball player.

Air Bud finds that he has the uncanny ability to play volleyball.