The best part of Kat's day? Walking her neighbor's irresistible pug, Meatball. So when Kat's parents insist that she join an extracurricular club this year, Kat decides to make her own, by turning her hobby into a business: a dog-walking business! Kat and her best friends, Taz and Lucy--plus the cute new boy, Declan--start Four Paws Dog Walking. But wrangling puppies and pleasing customers turns out to be a lot harder than they thought. Can Kat take care of the dogs she loves without hurting her friendships?