Synopsis:

Little boy Biju (uttam kumar) was the youngest son of his father. One day Biju went to meet his elder sister and accidentally meets Niru, a little girl and became quite acquainted with her. One day, his father died out of heart attack. While distributing the properties of his father, Biju comes to know that his actual parents have died and that the person whom he thought to be his father is not his parent. Biju was very upset till he left the town and came to a place where there was no inhabitant. He decided to build a colony over there along with the "sautals" living there. The build up nail ?, good and also invited many business man from different parts of the world to buy land over there and make the area prosperous with employment and technology. One day while he went to the city to purchase some important things, he came to know that Niru's father has died and that now she is a widow, living a pathetic life till went to meet her and asked her to go with him in his colony which he has developed with his own toil and will. Thus, Niru came with him. The colony came to be karan ? as shiuli bari and the railway locality ? on colony and thus he followed the path of humanity which was shown to him by his father