Once upon a time, Yattarman who is a heroes of the justice. After having won the fight with Doronbo who is a gang of the evil, Yattarman established their country "Yattar-Kingdam". The present day, people in "Yattar-Kingdam" were living under a tyranny. Descendants of Doronbo, they blood boils with righteous indignation, and rise up against Yattarman.