When a stuntman from the rural north marries a Hollywood movie star, it quickly becomes evident that their two kids will not get along, and neither will their respective dogs. Joshs dog Meatball, is a scruffy farm mutt with a wisecracking wit, while Laceys dog Cassie is a prim, spoiled purse dog who is not into country living and takes every opportunity to point that out with her constant complaints. With the parents away for their honeymoon, Cassie and Meatball must put their differences aside when they discover a pair of bumbling thieves plotting to steal Laceys moms prized diamond, which has been locked away in the house. The crooks soon find their work cut out for them when the talking dogs team up to defend their home, engaging in a non-stop hilarious slap-stick battle.