Reformist melodrama about widow-remarriage. Jai Narain, owner of a colliery, forms a happy family with his wife, his daughter Saroj, son-in-law Kailash, an engineer at the colliery, and their son Nannha. 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 appears, knowing her past history. Repeated scenes show Nannha pining for his mother.