The story revolves around the middle aged station master Nando Babu (Raghubir Yadav). He lives a typical middle class family life with wife Neelima (Kamalika Bandyopadhyay), daughter Indrani and son Indro. Indrani studies in class X1 and Indro studies in class 1V. One day Nando Babu receives a transfer letter to the Purulia district of West Bengal. Now, he leaves behind his wife, daughter and son in Kolkata and moves to the Tamna village of Purulia to save his job. Life in the Tamna village lacks the spirit and liveliness of the city as he remains idle the full day except giving out signals to the two passing by trains. Jiten Babu, the line man, introduces him to the village and shares a friendly relation with him. One day, Nando Babu, meets Sumi, the flower girl of the village. She is a young beautiful girl who lives below the line of poverty. She has a dream to earn and save money so that she could marry her beloved man, Kalar.