A man finds himself lost in a dark wood, initiating a descent through the realms of the afterlife to reconcile his spiritual state. The protagonist, acting as an allegorical figure for humanity, seeks salvation by traversing the structured layers of Hell, Purgatory, and Paradise. He is guided by historical and mythological figures who provide moral instruction and theological insight. The narrative framework utilizes a complex, non-linear structure of terza rima, mapping the physical and metaphysical constraints of a geocentric universe. The protagonist's objective is to move from a state of moral confusion toward divine enlightenment, facing the logical consequences of human sin and virtue along the way.

Discussion often centers on the intricate balance between the poem's rigid structural design and its expansive theological scope. Readers frequently highlight the vividness of the imagery, which transforms abstract moral concepts into tangible, often visceral experiences. Critics often analyze the work as a synthesis of medieval scholasticism and personal spiritual autobiography. The text remains a primary subject of study for its influence on Western literature and its complex political commentary. Many readers find the interplay between historical context and universal human themes to be the defining characteristic of the work.