A devastating plague has wiped out nearly all of humanity, leaving one man to navigate a world reclaimed by nature. Ish, a scholar and survivor, finds himself one of the last humans on Earth after a swift and deadly pandemic decimates the population. His objective is to understand the scope of the devastation and find other survivors, but he must contend with the breakdown of civilization, the resurgence of wild animals, and the slow, inevitable decay of human infrastructure. The narrative unfolds through Ish's first-person perspective as he encounters other scattered survivors and grapples with the future of humanity.

Earth Abides is widely regarded as a classic of post-apocalyptic science fiction, praised for its thoughtful exploration of humanity's resilience and its relationship with nature. Critics often highlight Stewart's measured prose and his ability to create a believable and compelling vision of a world after collapse. The novel's enduring appeal lies in its optimistic yet realistic portrayal of rebuilding society and finding meaning in the aftermath of catastrophe. It is frequently cited for its philosophical depth and its prescient themes of environmentalism and societal regression.