Lizzie and Charles Peterson love puppies. Even though they finally have their very own puppy, Buddy, Lizzie still can't get enough time with dogs. She helps her Aunt Amanda at her doggie day care center as often as she can. At the doggie day care, Lizzie meets a pesky but lovable pug named Pugsley. Pugsley is adorable, but he didn't earn the nickname Mr. Pest for nothing and his owners decide he's too much of a handful to keep! Will Lizzie figure out how to get Pugsley to behave and find him a forever home?