Moon of Madness is the latest edition of the continuing Spanish Bit Saga. The people gather to listen to a story by one of their young men, Badger. Though originally thought to be foolish and mischievous, he tells a gripping tale of a great shaking of the earth. The big river - the Mississippi - flows backwards, and chaos erupts among the tribes and white settlers of that region.
The earthquake, however, is only part of the peril as he tells of his courageous adventure to rescue his love interest, White Plume, from her kidnappers. The people not only learn of a great happening of the earth, and a story of courage, but also that a boy has become a man.