Koushik Mitra an engineering graduate was desperately looking for a job. As a result he had to choose taxi driving as a profession. Accidentally he got involved in a mystery at Ramchandrapur. The invention of late Mr. Chatterjee was owned by her daughter Sujata and Mr. Agarwal a reputed businessman and popular politician Mr. Mahapatra was eager to steal that formula. Kaushik came Ramchandrapur to help Sujata, but unable to manage the situation. Suddenly Sujata met Mr. P K Basu a well experienced Barrister. Mr. Basu knew the current situation and agreed to help Sujata. A sudden death of Mr. Agarwal completely changed the whole story. Koushik was accused as a murderer. Sujata tried to save Koushik and took the responsibility of the murder. In such a condition Mr. Basu stood for them. He showed his full ability and efficiency and solved the mystery.