The story would feature a mix of sophisticated Hindi dialogue for Ishaan and a more primal, rhythmic dialect for the villagers.
Ishaan sneaks into the cathedral during the Mass and discovers a terrifying truth: the "holy water" is actually being extracted from a subterranean entity trapped beneath the church. The villagers aren't just worshipping God; they are feeding a hunger that requires a human sacrifice every lunar cycle.
Heavy focus on shadows, candlelight, and the claustrophobic feeling of the mountains.