



Outside of the prestigious Yatter Kingdom is a country of poverty. There, a young girl named Leopard learns that her mother, Dorothy, and her two close friends, Voltkatze and Elephantus, are direct descendants of the Doronbow Gang; Doronjo, Boyacky, and Tonzra, whose battle against the Yattermen long ago led to their people becoming exiled and living in poverty. Dorothy encourages Leopard to become a good girl and not become a villain like her ancestors. However, on the day of Leopard's ninth birthday, Dorothy develops an illness that cannot be treated with their country's medicine. Wanting to save her mother, Leopard goes with Voltkatze and Elephantus to try and get some help from the Yatter Kingdom, only to be attacked by the current Yattermen, who are shown to be cruel unlike their heroic ancestors, leaving them unable to prevent Dorothy from succumbing to her illness.

On their way towards the tower in the center of Yatter Metropolis, where they believe Yatterman to be hiding, the gang survey the factories people are being forced to work in. Upon nearing the inner city, they are confronted by the other generals of the Twelve Yatter Guardian Gods, who Goro was formerly a part of, and are quickly captured. Before they can be executed, they are requested to be brought before Yatterman, who they are shocked to discover is actually the original Doronbow mastermind, Dokurobey.