A Girl & Her Dog-Let the Magic Begin! When 11-year-old Millie McTwitter defies her mother's strict pet prohibition and adopts P.J. le Pooch while her mother is away, something magical begins to happen in Millie's lonely life. Millie's drawings in her sketchbook-the last gift from her late father-start to animate on the page, and new people enter her life in unexpected ways. Millie's mother, vexed by her daughter's disobedience, threatens to return P.J. to the shelter, refusing to make a final decision about keeping him until his 60-day return guarantee is up. Millie desperately tries to keep P.J. in line, but dogs will be dogs.