Francis, a young man, recalls in his memory the horrible experiences he and his fiancée Jane recently went through. Francis and his friend Alan visit The Cabinet of Dr. Caligari, an exhibit where the mysterious doctor shows the somnambulist Cesare, and awakens him for some moments from his death-like sleep.

Two families, abolitionist Northerners the Stonemans and Southern landowners the Camerons, intertwine. When Confederate colonel Ben Cameron is captured in battle, nurse Elsie Stoneman petitions for his pardon. In Reconstruction-era South Carolina, Cameron founds the Ku Klux Klan, battling Elsie's congressman father and his African-American protégé, Silas Lynch.

After the train station clerk is assaulted and left bound and gagged, then the departing train and its passengers robbed, a posse goes in hot pursuit of the fleeing bandits.

Professor Barbenfouillis and five of his colleagues from the Academy of Astronomy travel to the Moon aboard a rocket propelled by a giant cannon. Once on the lunar surface, the bold explorers face the many perils hidden in the caves of the mysterious planet.