The Yantra: when a Vimana returns...

999 A.D., Vatican City: Pope Sylvester II, on his death bed, ordered the destruction of a talking bronze head...

1945: In the final days of Second World War, an unmarked Japanese submarine escaped from Singapore, carrying the fuel of the mythical Vimanas, the UFO's of ancient India. Arriving at a secluded Andaman island, three INA soldiers waited for the elusive order for a regroup and a final stand...

The present day: Rajiv Chinchar, an analyst, barely escaped an assassination attempt when he reported the appearance of a strange flying object in the Himalayas. Held hostage by the richest business tycoon in the country, he agrees to find the artifact that destroyed the tycoon€s ancestors in the thirteenth century... a Vimana.

A mysterious explosion in the Indo-China Border, results in a Chinese submarine lurking near the Andamans with a cargo of nuclear missiles.

As Rajiv starts connecting the dots, clues emerge linking a Stone-Age African tribe in the Andamans, a lost bronze head, the lost city of Shambala, ancient UFO's and a massive Naval Invasion of Indonesia by an Indian Emperor more than a thousand years ago. How does the tycoon relate to all of them?