In this adventure the young lively daughter of wealthy Virginia parents bridles under the stern tutelage of her new English nanny who insists she forego her tomboy ways and act like a perfectly lady. This nanny runs the household with an iron hand and the little girl is terribly unhappy until she finds a lost German shepherd. While following the wanderer, the girl tumbles into a well. The dog gets help. The girl names him "Wolf" and is delighted to have a new best friend. Naturally, the nanny is terribly upset because the dog is terribly disruptive. One day, the nanny finds out that Wolf is an AWOL Army dog and sees that he is returned. Brokenhearted, the girl runs away to Washington, DC to have a private audience with the secretary of war. Tearfully she tells how her parents neglect her and how lonely she is without wolf. The secretary is moved but explains that Wolf has a more patriotic role to play. The girl understands and returns home filled with pride for Wolf. Things get better at home when her relieved parents fire the hated nanny and start spending more time with her. As an added bonus, the secretary sends the girl a brand new puppy that looks just like wolf.