Kahaani is a thriller starring Vidya Balan and Parambrata Chatterjee in the lead roles. Vidya balan plays a pregnant woman in search of her husband and the father of the child which takes her all the way to Kolkata from London.
Vidya Bagchi(Vidya Balan) arrives in Kolkata from London to find her missing husband. Seven months pregnant and alone in a festive city, she begins a relentless search for her husband. With nothing to rely on except fragments from her memories about him, all clues seem to reach a dead end when everyone tries to convince Vidya that her husband does not exist
Everyone tries to convince Vidya that her husband does not exist. She slowly realises that nothing is what it seems. In a city soaked in lies, Vidya is determined to unravel the truth about her husband – for herself and her unborn child – even at the cost of her own life.