Plot
Marley is a puppy, and according to some people he is "the world's worst dog". While taking care of Marley, Bodi Grogan has to stay with his grandfather, Fred Grogan because his mother, Carol, is on a business trip. So Bodi stays with Marley in his grandfather's house. His grandfather is strict about chores and pushes him around a lot.
One day, while on a walk with Marley (Bodi on his skateboard), Bodi meets a girl named Kaycee. They chat for a while, then she tells him about a puppy championship. Kaycee, whose parents own a pug rescue center, enters three of her pugs in the contest so she can get money for the center.
Kaycee suggests Bodi enter Marley in the contest. However, as the rules stipulate a team must have three dogs, she tells Bodi about Mrs. Crouch, who has two other lab puppies, named Fuschia and Moose. Together, all three of them train for a course.
Meanwhile, elsewhere, Hans Von Weiselberger is being cruel to his three puppies, Turbo, Liesl and Axel by using voltage collars on them. If they are not behaving the way he wants, they get shocked. His three puppies were last year's puppy champions, and so Hans wanted to make them even better.
The day before the competition, Bodi sends his pups for a day at the spa. However, after the pups finish, a man wearing a spa worker's uniform takes them, along with an Australian Shepherd dog named Dundee, who was also part of the competition. The evil man is Henkle, Hans's assistant. He locks the four of them away with two big German Shepherds, Trouble and Chipper, who were pretending to eat the pups.
The pups get scared, but the shepherds say that they were only messing with them. They help them escape by using a seesaw which they made: one pup would be on one side while one of the shepherds would jump onto the other so that the pup would fly. All four escape and return to Bodi's home very dirty. He cleans all four of them and Grandpa calls Dundee's owner, so he goes home.
The next day the championship starts. Everyone does well, but in the middle Marley gets distracted. When the prizes are announced, Bodi is upset because he did not win. Initially, Hans was in the first place, but Marley saves the day. A cat named Cat snips all of Hans's dogs' collars, then Marley takes one collar and puts it in Hans' pocket.
When the pups don't obey, Hans turns the collars on, getting an electric shock himself. His remote, which controlled the collars, falls out of his pocket and the judge sees it. He is hence disqualified. The new results are first place for the Australian dogs and second place for Kaycee's pugs.
As Marley saved the day, Bodi gets a prize for good sportsmanship. Bodi, in the middle of the competition, sees his mother and is surprised. His mother, who thought he was irresponsible, sees that he is happy with Marley. He couldn't keep Marley because it was his relative's dog.
However, the three dogs who belonged to Hans are not his anymore: one family adopts Liesl and Axel, but Turbo, the last one, was going to be taken to the dog shelter. Bodi's mother lets him keep him, as she believes Bodi is ready to own a dog.
