Anisha, an attractive young lady in her early thirties, is astounded to find that someone is sending her a series of diamonds by courier. Her father, Captain Mehta had disappeared some years back and the letter accompanying the diamonds hints at some link between her father and the diamonds...

The diamonds lead the intrepid Anisha, a night club singer by profession, to the idiosyncratic private detective, Prashant Saigal and his associate, Dr. Arvind Rao:a criminological expert with an eye for the beautiful tings in life!

The trio of Prashant, Arvind and Anisha reach the house of the man who was sending the diamonds, namely, the ultra-stylish Goutam Dutt. He tells them the intriguing tale of the Agra Treasure, a collection of highly priced jewels that had its origins some 150 years back and which disappeared nearly 40 years back... The search for the Treasure and for the truth behind Captain Mehta's death leads the trio to Shillong, to the house built by Colonel Dutt, the father of Goutam Dutt. The Colonel had died in a strange paroxysm of fear upon seeing a ferocious face at the window...

Meandering along a path full of strange sulphurous fires and labyrinthine corridors, Prashant and Arvind engage in a cat and mouse game with the one-legged Jalal. This culminates in an incredibly complex chase on the Badapani River, a massive water body surrounded by mountains. The final confrontation between Prashant and Jalaluddin takes place on the high seas with the mythical treasure ever remaining cloaked in historical mystery, even as a shaken Anisha tries to assimilate the nuances of this dreams like sojourn.....