Koushik Mitra, an engineer took a job of taxi driver because he was unable to find an appropriate service. One day he meet with Sujata, a scientist's daughter and they fell in love. Sujata was trapped in a conspiracy where she is accused of a murder. Barrister P. K. Basu defends on behalf of Sujata and starts investigation to find out the real culprit. What follows is a twist to find the actual shooter who killed Aggarwal.