The novel opens through the fragmented consciousness of Benjamin Compson, a thirty-three-year-old man with mental disabilities who is cared for by the loyal servant Dilsey. Benjamin's sections reveal a childhood dominated by his sister Caddy, whose eventual downfall and departure cast a long shadow over the entire household. The second section plunges into the tormented mind of Benjamin's brother Quentin, a Harvard student consumed by obsession over family honor, time, and his sister's lost purity, leading ultimately to his tragic suicide.
The third section shifts to Jason Compson, the cynical and bitter brother who remains behind to support the household. Jason is consumed by petty cruelties, financial manipulation, and deep resentment toward his family, particularly toward Caddy's illegitimate daughter, Quentin, whom the family has taken in. Jason's narration exposes the daily misery, greed, and emotional dryness that now define the remaining Compson family members in Mississippi.
The final section of the book steps outside the family's internal monologues to focus on Dilsey, the resilient African American cook who holds the deteriorating household together. Through Dilsey's steady presence, the novel contrasts the enduring strength of the servants with the moral and financial bankruptcy of the white aristocracy they serve. On an Easter Sunday, the underlying tensions of the household finally erupt as the young Quentin runs away, leaving the aging remnants of the Compson family to face their desolate reality.
As the narrative concludes, the legacy of the Compson family is shown to be one of inescapable ruin, driven by their inability to adapt to a changing world or escape the ghosts of their past. Benjamin continues his quiet moaning, anchored only to his memories of Caddy, while the household moves steadily toward its final, inevitable dissolution.