Endemolshine, Reliance Entertainment, Blue Waters Motion Pictures, Cinemaa Pictures LLP and Kross Pictures' TE3N is a thriller. John Biswas (Amitabh Bachchan) is someone who has been waiting for justice in lieu of the kidnapping and murdering of his darling granddaughter Angela Roy (Aarnaa Sharma), an incident that had taken place 8 years ago.
After 8 years, even though John Biswas still continues his fight for justice, what has changed is that, the then-investigating officer Martin (Nawazuddin Siddiqui) has now become the Father in a church. Just as when everyone is living their own lives, a young boy gets kidnapped in broad daylight. What is shocking is that, the kidnapper's pattern while kidnapping the young boy is absolutely and strikingly similar to the kidnapping of the innocent Angela Roy. This time round, the investigating officer happens to be Sarita (Vidya Balan). While Sarita and Martin go the legal way to trace the criminal, John Biswas, despite his old age, carves his own path and is out on a mission to nab the criminal.
Will the trio be successful in their efforts is what forms the rest of the film.