When the forces of chaos interrupt the most important meal of Dash's day and conspire against him, his friends, his school, his town, and indeed the entire planet, Dash needs to take things into his own hands, and some crazy stuff starts to happen.

Welcome to the town of Barksdale, where the canine residents strive for perfection. Every shopkeeper claims to be the "best groomer" or sell the "best biscuits". And at Barksdale Academy, the pressure is on every year for one pup to be named Best in Show. Nova, Duke, Harley, and Peanut have never won Best in Show...which is okay with them! But they have to work together to pass their Agility Exam, because either the whole pack passes or the whole pack fails.

What could be weirder than a mad science teacher who invents a car that runs on potatoes and wants to take over the world? How about a bus driver who can't even "find" the weirdest school on the planet?

Freddy Thresher has a problem: a really, really, big problem. He's the only one in his class who hasn't lost a tooth! All of the other students in Mrs. Wushy's first grade have signed their names on the Big Tooth, and Freddy's determined to get his name on it, too. So when Max "The Meanie" Sellars calls Freddy a baby, Freddy decides he's going to lose that tooth one way or another, even if it means getting punched in the face at recess, and even bigger trouble, with Mom!

Welcome to Barksdale, where all the dogs strive for perfection. Every shopkeeper claims to be the “best groomer” or sell the “best biscuits.” And at Barksdale Academy, the pressure is on for one pup to be named Best in Show. Duke’s cousin Coco, a French bulldog from Paris, is visiting for the K-2 loyalty exam. During this exam, the Underdogs and their classmates will participate in a field day event against a rival school.