Desc: Koli O Arjun: Directed by Bhowmik Subhankar. With Raaj, Subhadra Chakraborty, Soumitra Chatterjee, Indrani Dutta. In the morning serenity of Jharkhand 's natural beauty, the vast stretch at the Khel Gaon reveals a group of old morning walkers talk with in themselves about Aditya a retired school teacher and her daughter Koli. Koli has brought up her brother Arjun as a mother. Her Father Aditya was a School master, now retired and his pension is yet to clear. Her brother Arjun has completed his studies, and waiting for jobs. Kali works in a Government office and honestly discharges her duties. Ranjan works in a private concern. Both Koli and Ranjan love each other but Koli would not marry till her father and brother would get settled. Bishnu Kanta Mahato is a rich man in the Hazaribag town. He and his wife Sundari want to build a Shopping Mall at Ranchi. Their Project file comes to Urbban Development Officer Koli, who finds a number of loop holes in it. Being an honest Government official she declines to sign the file and falls to the wrath of Bishnukanta, who orders his goons to strip off the dignity of Koli . Arjun appears and fight away the attackers. Seeing Arjun's chivalry and braveness, Misti, a young girl, falls in love with Arjun instantly. She spells everything at a single breath and Koli likes her simplicity. The elder brother of Misti, Ranadeep is a responsible police officer, deputed for special task. Misti's father is a military soldier commissioned to Kashmir. So Misti has come to Jharkhand to complete her studies with her brother and mother. By the course of events it reveals that Ranjan is Bishnukanta's son, and he has taken dowry from the fathers of the possible brides in the name of his son's marriage. Ranjan intimates Koli but Koli denies. Arjun comes to know about this and goes to Ranjan's house and pursue Bishnukanta to Koli and settle up the marriage. Finding Bishnu as Ranjan's father, Koli refuses to proceed any farther. But Arjun debated for their true love and truth is the essence of life. Bishnu plans instantly that if Koli comes to his house as a bride he would be able to sign up the Mall's file, he acted like a chameleon, confesses his guilt and pursued Koli for marriage. So the marriage happens. After the marriage Bishnu requested Koli to sign the Mall file, but Koli informed that she had already left the job. Dejected Bishnu plans to kill Koli and go for further marriage for Ranjan to compensate his loss. By this while time passes and one day the advocate of the Trusty Board, Ajitesh comes and reveals that Ranjan is not a son to Bishnu but he is the only son of a rich man Radhamohan. According to his last will the married wife of Ranjan will be the lawful owner of the whole property. Bishnu and his wife Sundari was only servants deputed to look after Ranjan, alias Chandramohan. After this Bishnu and Sundari feigned to leave the house but Koli requested them to stay back as parents to Ranjan. On the other side, Government Intelligent informed DIG Sadananda about Bishnu's un-social activities. DSP, Sadananda, directly deputed Special officer Ranadeep to enquire and make a file on Bishnu. Ranadeep secretly compiled the file and gives it to DSP Sadananda. Bishnus men kill Sadananda and destroy the file. In the course of time Koli gets pregnant and Arjun comes to Koli's house to see her. Here he senses the ill intentions of Bishnu and Sundari about killing his sister Koli. He dismisses every attempt and ultimately tries to tell the truth to Koli. Koli gets furious since his brother has insulted his father in law and thrashes him out of her house. Arjun does not leave the spot and posted himself at the gate. By this time Misti comes to see him and consoles him. Bishnu plans to get rid of Arjun orders his men to pick him up in the guise of police men and kill him. Meanwhile another set of goons are arranged in the guise of health career to kill Koli and take her away by ambulance. Arjun could recognized the fake police men fight with them and comes back to Koli's home to save his didi. This time he fails to do so but gets captured by Bishnu's men. Bishnu does not want to miss this chance and wants Koli to put her signature on the will that gives all her the property to Bishnu. Koli says that she would sign if Bishnu agrees that all her brother said previously is true. Being eager to become rich Bishnu proclaims his past activities. Hearing to that, Koli and Arjun start laughing. Actually, It reveals that it was all a plan with Misti and ADIG Ranadeep. Koli and Arjun staged a drama to catch Bishnu and Sundari red handed. They had installed spy cams all over the house that had covered all the activities of Bishnu and Sundari and had been telecasted. Bishnu and Sundari are caught and Koli decides to bind Misti and Arjun to the marriage knot.