Dai, a Ninja also known as the Bat arrives in Hira to investigate the town secrets. Rigan Yagyu of the Owari clan will do everything to stop this from happening. Will Dai find the truth and stop the evil in Hira?

The small town Hira holds a secret in hidden gold. The Ninja Dai, also called "the bat" because he only flies by night comes to investigate the mystery posing as a young punk around town. The evil Rigen Yagyu of the Owari clan will do anything to stop Dai from finding the truth. "The bat" must use all his weapons and skills to beat the towns villains and exposing the truth.—Fauno