Best friends Mindy Park, Gabby Jordan, and Priya Gupta are back in business! After a few ups and downs, their dog-walking business is booming and the girls are closer than ever. It's a dream come true!

But for Mindy, things at home are beginning to feel like a bit of a nightmare. Her mom just started dating someone, which has Mindy feeling like the odd one out. For as long as she can remember, it's been just the two of them and she doesn't want that to change. (So what if her mom's boyfriend has a cute pet cat, and all of Mindy's friends seem to think he's pretty cool?)

And things only get worse when a new student named Hazel arrives in class and seems totally into joining PAWS. Sharing her mom feels bad enough, so there's no way Mindy's is going to share her best friends and her business, too! But when Mindy's stubbornness starts to hurt everyone around her, will she be able to overcome her fears and learn that change doesn't have to be a cat-tastrophe?