The rivers remembered before men did. In 1819, as the Burmese invasion advances toward the eastern frontier of the Ahom Kingdom, Sadiya stands on the edge of history. Its young commandant, Surjya Phukan, soon realizes that victory may not lie in holding a fort but in ensuring that its people, their memories, and their future survive. As refugees flee westward and the frontier descends into war, ordinary men and women discover extraordinary courage. Against overwhelming odds, the forests, rivers, and marshes of the eastern frontier become allies in a desperate struggle to preserve not merely a kingdom, but a way of life. Richly woven from history, folklore, and imagination, The River Bastion is an unforgettable story of duty, sacrifice, resilience, and the enduring belief that a place truly falls only when its last story is forgotten.