"The Expanse" is a science fiction television series based on the book series by James S.A. Corey. Set in a future where humanity has colonized the solar system, it explores the political tensions between Earth, Mars, and the Belt, a region inhabited by asteroid miners. The story begins with the mysterious disappearance of a young woman, leading to a conspiracy that threatens the fragile peace among the factions. The series features a diverse cast, including characters like James Holden, Detective Miller, and Chrisjen Avasarala. It combines elements of space opera, political intrigue, and hard science fiction, gaining acclaim for its realistic portrayal of space travel and complex character development.