 Reformist melodrama about widow-remarriage. Jai Narain (Sethi), owner of a colliery, forms a happy family with his wife (Manorama), his daughter Saroj (Umasashi), son-in-law Kailash (T. Kapoor), an engineer at the colliery, and their son Nannha (Satu). Kailash dies in a colliery accident caused by Jai Narain. Nannha is sent to an orphanage and Saroj marries Ramesh, who loves her but is unaware of her previous marriage or of being a stepfather, while Saroj misses her dead husband and longs for her absent son. A former suitor, Ranjit (P. Kapoor) appears, knowing her past history. Repeated scenes show Nannha pining for his mother.