Hyperion is a science fiction novel written by Dan Simmons. The story is set in a future where humanity has spread across the galaxy and is on the brink of war. A group of pilgrims travels to the mysterious planet of Hyperion, each with their own reasons and secrets. As they share their stories, a larger narrative unfolds, revealing ancient mysteries and cosmic forces. Hyperion is a richly detailed and philosophical exploration of time, space, and the human condition.