The Long War by Terry Pratchett

A Novel of Discworld

In a universe where countless parallel Earths exist, humanity has discovered the ability to "step" between these worlds, leading to a new frontier of exploration and colonization. As societies adapt to this vast, untamed multiverse, tensions rise between the original Earth and its far-flung colonies. Amidst this backdrop, a diverse cast of characters, including a reluctant hero and a visionary leader, navigate political intrigue, cultural clashes, and the mysteries of the unexplored worlds. The narrative weaves together themes of discovery, cooperation, and the challenges of maintaining unity in a rapidly expanding human civilization.