Hyperion is a science fiction novel written by Dan Simmons. It is set in a future where humanity has spread across the galaxy and is on the brink of war with an enigmatic alien race known as the Ousters. The story follows a group of pilgrims who are traveling to the planet Hyperion, where a mysterious creature called the Shrike grants one person's wish while killing the rest. Each pilgrim tells their story, revealing their motivations and secrets. Hyperion combines elements of space opera, time travel, and mythology to create a complex and engaging narrative.