Kat just wants to spend her summer vacation reading mystery novels and flying drones with her friends, but her life is turned upside down when her stepfather Mark gets a promotion.  Kat, her mom, and Mark move to a new city and a big creepy house, and it's going to take more than her mom's yoga breathing exercises to make Kat okay with this.

Then on her birthday, Kat receives the ultimate surprise: a trip to the animal shelter to adopt a dog!  For Kat, it's love at first sight when she sees Kit, an oversized, overly timid puppy with a gigantic nose.

The only problem is he's afraid of everything.  To help Kit gain some confidence, Kat enrolls in scent tracking classes with him where she learns that Kit's nose isn't just big, it's powerful!

Soon, the new duo finds themselves digging up adventure at every turn, whether it's a hunt for a lost neighbor or unveiling a clue about their mysterious new house.