"Strange Exodus" by Robert Abernathy is a science fiction novel written in the mid-20th century. It explores themes of survival and adaptation in a post-apocalyptic world where gigantic, mindless monsters consume all life on Earth. The story centers around the character Westover, who grapples with the horror of humanity's impending doom as he navigates a world transformed by these extraterrestrial invaders. The narrative follows Westover's harrowing journey as he finds himself alone in a landscape devastated by the monsters. After discovering that he can survive by living off the creatures themselves, he faces the psychological and physical challenges of existing as a parasite on their backs. Throughout his struggle for survival, he engages in thought-provoking discussions with other survivors, contemplating human nature, adaptation, and the weight of humanity's past actions in the face of overwhelming existential threats. As Westover and his companions seek a way to coexist with the monsters, they grapple with the implications of becoming "endoparasites," pondering the balance of survival and the sustainability of their new existence. (This is an automatically generated summary.)