Everything is perfect in Adventure Bay. The pups are having the time of their lives, especially since Ryder is kind enough to give them an off day where they don't have to do any missions at all. That quickly changes when the Earl of Barkingburg calls and says that the crown has gone missing again. Chase automatically suspects Sweetie for stealing it, as she's been known to steal it before. But this time, the West Highland Terrier is innocent. She is trying so hard to be good for Princess Mila. The pups are very confused.. until Claw shows up. The Doberman says that there's been a new pup sneaking around the castle and she might have taken the crown. The team is still confused. Why would a new pup sneak around the castle and take a crown? What could she possibly want it for? What starts off as an amazing off day soon turns into a quest for the crown.. and a quest for a new teammate.