The theft of a massive shipment of silver from the San Tomé mine triggers a volatile political upheaval in the fictional South American republic of Costaguana. The narrative follows the incorruptible but ultimately compromised Nostromo, a man of immense reputation, as he becomes entangled in the competing interests of foreign capitalists, local revolutionaries, and corrupt officials. Conrad employs a non-linear structure, shifting perspectives across time to reveal the corrosive influence of material wealth on both individual character and national stability. The world is defined by the harsh geography of the Sulaco province and the rigid, often brutal, social hierarchies of a post-colonial state.

Readers and critics frequently discuss the novel's challenging structure, noting that the non-linear timeline requires significant attention from the audience. Discussion often centers on the portrayal of the San Tomé silver mine as a symbol for the destructive nature of unchecked capitalism and foreign intervention. Many highlight the depth of the character studies, particularly how the environment of Costaguana forces individuals to confront their own moral failings. The atmospheric density of the prose is often cited as a defining feature that creates a sense of historical weight and political tension throughout the narrative.