Joseph Severn, the name assumed by a second John Keats AI persona, has dreams of the pilgrims on Hyperion. Severn's narrative dreams of the pilgrims They have rarely fought full-scale conflicts with the Hegemony but are currently launching an invasion of Hyperion. The Ousters have mutated physically, believing that they should adapt to their outer-space surroundings rather than adapt the surroundings themselves. The Hegemony is opposed by the Ousters, genetically modified humans that fled the Hegemony's growing influence even before Earth was destroyed. While the Core's physical location is unknown, they interact with humans through various virtual realities. The farcasters are created and managed by the TechnoCore, an AI civilization. Some worlds, like Hyperion, have no farcaster portals and are sparsely settled they are known as the 'Outback'. The Hegemony is an interstellar governmental entity formed by many planets, most of which are connected by instantaneous farcaster portals. The novel also contains explicit references to classical literature and modern writings, including the scientific works of the Jesuit and paleontologist Pierre Teilhard de Chardin, the physicist Stephen Hawking, and some of the fiction of author Jack Vance.

The Hyperion Cantos is influenced strongly by various works, including the teachings of the environmentalist John Muir and the poetry of John Keats a reincarnation of Keats narrates The Fall of Hyperion. Powerful entities such as the Hegemony of Man and the Artificial Intelligence ( AI) TechnoCore seek to influence the pilgrims' journey. The seven pilgrims intend to travel to the Valley of the Time Tombs, where the Shrike, a metallic creature alleged to grant one wish to the members of a pilgrimage, dwells. Set in the 29th century, the novel documents a pilgrimage to the planet Hyperion.

It was also nominated for the Hugo Award and the Nebula Award. The novel, written in 1990, won both the 1991 British Science Fiction and Locus Awards. The Fall of Hyperion is the second novel in the Hyperion Cantos, a science fiction series by American author Dan Simmons.

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