To investigate recent disappearance of an RAW field agent and a top missile scientist, RAW sends Intelligence Field Officer ANIRUDH to Bhubaneswar. During the briefing, Anirudh learns about the missing RAW field agents.
In Bhubaneswar, he heads to his uncle's house. Uncle, a doctor, is his only surviving family. Uncle is away at the time but there he stumbles upon NESHTAN, a frail twelve year old, hiding in his uncle's house. From Neshtan, Anirudh finds out an uncomfortable truth about Neshtan's Aau-baba, a mixed martial instructor who has been shot earlier in the day. He heads to the mixed martial arts hall to investigate further. He doesn't find any trace of violence but dodges a woman in pursuit and escapes with a curious book.
In the book, he comes across an unsolved Sudoku puzzle. Neshtan explains the events of the previous day. Using available codes, Anirudh and Neshtan resolve clues hidden inside the unsolved Sudoku puzzle. Investigating further, Anirudh stumbles upon a sinister plot which has the potential to destabilise south-east Asia and has direct bearing on his assignment. And it explodes faster than expected. He comes across a set of curious hieroglyphics which provide the last proverbial straw.
Strewn like breadcrumbs along the way, are the clues meant to save his life or kill him?
Who can he trust and why?
Will Anirudh be able to stay alive to uncover the plot in time?
What is the cost of the reciprocal?