The narrative follows the life of Jacob Flanders from childhood to adulthood, tracing his development through the fragmented impressions of those who encounter him. Jacob moves through a world defined by shifting perspectives and the limitations of human connection, as the narrator attempts to reconstruct his essence through objects, letters, and fleeting observations. The story operates as a series of snapshots rather than a linear biography, emphasizing the difficulty of truly knowing another person. The text utilizes a stream-of-consciousness framework to capture the internal states of characters as they orbit the elusive figure of Jacob.

This work is widely recognized as a pivotal moment in the development of modernist literature, marking a departure from the rigid structures of the Victorian novel. Readers and critics often note the innovative way the text challenges traditional notions of characterization by presenting the protagonist as a collection of external perceptions. The prose is frequently praised for its lyrical quality and the precision with which it captures the ephemeral nature of memory and social interaction. While some find the lack of a conventional plot challenging, the consensus highlights the book as a significant experiment in narrative form that paved the way for later, more complex works by the author.