B.J. is informed the Provo-Marshall is headed to camp to investigate a claim that he is not a certified doctor. When Col. Potter reads him the notice, he realizes that the author of the notice is an old friend of B.J.'s and is making a trip to visit him. This leads to a series of practical jokes between the two, including one which charges B.J. of destroying a hotel room and personally embarrassing a General in the next room.