Based on the best-selling books by Susan Meddaugh, the series follows the adventures of Martha, a loveable, honest and kind dog. When accidentally fed alphabet soup, Martha gains the power of speech and using her new skills she gets jobs, foils bad guys, wins contests, runs for office and orders lots of pizza! Truman needs Martha to help him find something he lost at Dog Head Lake. The only problem is that he won't tell Martha what they are looking for because he is too embarrassed. After getting lost deep in the forest and coming face-to-face with his fears, Truman learns a valuable lesson about himself.