For Hanzo, an old man and successor to a Japanese ninja clan, lonely days came to an end when he took in Jiro. Jiro is Hanzo's only companion. They do everything and go everywhere together, but Jiro has a secret. Every morning when Hanzo trains using his ninja skills, Jiro watches him intently soaking in Hanzo's every move and technique. When Hanzo is gone or asleep, Jiro practices everything he's learned from Hanzo. The surprising twist is that Jiro is a dog, a small pug, to be exact! Since Hanzo was the last of his family after losing his only son, Ichiro, in a car accident and his grandson, Ryoichi, who went missing shortly after, Jiro has made it his duty to become. Hanzo's successor! But Hanzo's world seems to go downhill fast once their home is broken into, and some important books are discovered missing. Not wanting the old man to suffer any more than he has, Jiro decides to find Hanzo's missing books. Jiro teams up with Luna, a white poodle, and they embark on a mission to retrieve Hanzo's books from the thieves. The two small dogs were not expecting because these books contain the power of the Hakumoto Clan. What is even more surprising is that the thieves happened to be highly talented and trained ninjas. Jiro's life is instantly turned upside down as secrets are revealed, and someone from Jiro's past might have come back into his' and Hanzo's life. Follow Jiro and Luna on their journey in "Ninja Pug: Birth of Ninja."