Police officer Raghu, raised in a Dalit colony in fictional Rajanagaram, journeys to the misty hills of Arunachal Pradesh, confronting a century-old struggle between tradition and modernity. As he implements reforms in the police force—mirroring his efforts in Goa and Delhi—he grapples with deep-seated conflicts over tribal identities. His path intertwines with that of a revered Swamiji dedicated to preserving indigenous culture. Against the backdrop of Christian conversions in remote villages, Heroes of the Hidden Lands vividly portrays the tensions arising from the clash of long-held beliefs and emerging forces.