A giant stone statue comes to life to protect the residents of a small town against the depradations of an evil warlord.

The tyrannical Lord Danjo Mikoshiba covets the rich, fertile lands surrounding Lake Yakumo. During a memorial ceremony for the late Chigusa lord, Mikoshiba launches an attack, overthrowing the honorable Lord Juro. Just when all seems lost, Daimajin rises from Lake Yakumo to settle a score of his own.

In a mountainous region of Japan, Lord Arakawa kidnaps the men of nearby villages to use as slave labor, producing gunpowder from his sulfur pits. A band of young boys decide to rescue their enslaved fathers on their own.