Wilma Tenderfoot, a tiny, brash, and determined ten-year-old orphan, dreams of becoming a world-famous detective so she can find out who her parents are. When Wilma discovers that her new neighbor is a renowned detective, she is determined to be his apprentice. Wilma finds clues, makes deductions, and scouts out suspects, all with the help of her dog, Pickle. Can she win over the famous detective before Pickle eats all of the clues?