The novel follows the fantastical journey of a 19th-century American engineer who, after a blow to the head, finds himself transported back in time to the medieval kingdom of King Arthur. Using his modern knowledge and ingenuity, the protagonist attempts to modernize the past society, introducing industrial technology and democratic ideas. His efforts to revolutionize the Arthurian world are met with both humor and a critical examination of the social and political issues of both the past and his contemporary society, ultimately leading to a complex interplay between progress and tradition.

In "Bech Is Back," the protagonist, a Jewish-American writer named Henry Bech, experiences a revival of his career after a period of creative stagnancy. Throughout the novel, Bech travels the world, from Europe to communist countries, grappling with the challenges of literary fame, cultural differences, and personal inadequacies. The narrative combines humor and satire to explore the complexities of literary life and the peculiarities of Bech's character, offering a sharp critique of both the literary establishment and international cultural politics.

The novel revolves around Joe, a successful writer who must confront his past when he returns to his hometown after his father falls into a coma. Having left behind a trail of hurtful caricatures of the townspeople in his bestselling book, Joe's homecoming is met with hostility. As he navigates the complex relationships with his estranged family and former friends, Joe grapples with feelings of regret and the realization that you can never truly escape your past. The story is a poignant exploration of redemption, forgiveness, and the enduring bonds of family and friendship amidst the backdrop of a small town's dynamics.