The story follows the adventures of Hank Morgan, a resident of Connecticut, who finds himself transported back in time to King Arthur's reign in medieval England due to a blow to the head. Utilizing his knowledge of technology and modern innovations, Hank tries to bring about changes in the past, intending to modernize and revolutionize the medieval society he encounters.The novel combines elements of satire, social commentary, and humor, as Twain uses the premise to critique various aspects of both contemporary society and the romanticized view of the past. Through Hank's interactions and attempts to apply his technological knowledge in King Arthur's era, Twain explores themes of progress, social hierarchy, and the human condition.While it's commonly known as a single novel, there might be editions or adaptations that split the book into parts for various reasons, such as serialization or abridgment for younger readers. But the original work by Mark Twain is typically presented as a complete novel in one volume.