Sujoy Mukherjee runs a successful business and has a happy life with his wife and his two kids.On the 10th year of his company, he decides to increase the salary of each of his workers at the factory by Rs 500.Two goons approach him and ask him to pay Rs 5 lakh each to them, otherwise they would kill him. He decides not to pay them anything so they kill him and his wife one day in front of his children. The children manage to run away and escape, but they are separated. The girl is brought by a lady doctor who finds her and the little boy who is younger is brought by a school teacher who finds him. Years pass and they grow up. The guy, Partho studies in a college and is a brilliant student girl called Asha from his college is in love with him. When a man snatches the handbag of a girl, he catches the thief for which the girl(who is actually his older sister Urmila) is grateful to him.Partho becomes very close to the new O.C who is actually going around with Urmila.Asha decides to take Partho to her house one day. When he goes there, he sees his father’s murderer who is actually Asha’s uncle(father’s own younger brother).This shocks him and he decided to sever all ties with her.Partho’s friends decide to throw a party since she has done very well in her exams.Partho is tricked in going there and even singing a song. He starts his father’s song and when he finishes it, Urmila embraces him because both of come to know of each other’s idenitity.Meanwhile Asha’s uncle asks his brother to pay up or he would kill him. When Asha’s uncle refuses, he takes all of them hostage along with Urmila .Partho comes to know about it and goes to rescue them along with the police who arrive soon after wards. He rescues them.