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Shantanu, a young CBI investigator, is handed the case of flight A0 26, which has gone missing with 8 delegates in it, after the take-off from Kolkata. It seems like an open and shut case when CBI receives the information of a plane crash that has simultaneously taken place in the hills of Neora Valley, West Bengal.

It becomes crucial for Shantanu's investigation to refer to the details of the original flight JL50. The evidence recovered from the crash site claims their existence from 35 years ago. How is the past connected to present events? Who is the woman claiming to be the original pilot of flight JL50 - pilot or impostor?

The only two survivors from the cockpit area as well as all the evidence found in this destroyed flight, including the black box recording, are claiming to be from 1984, adding further mystery and complications for Shantanu, the CBI officer in charge of the case, who has his own inner questions to deal with.

Shantanu dives into the mystery of the case to fetch his answers. Linking in all that has happened, he finally inches closer to his goal. As he gets closer to his objective with each step, destiny scripts another plan for Shantanu, leaving him fighting for answers yet again.