While he is crying over his sad luck, he overhears his landlord saying that he should have been dead rather than blind. That way his children would have been taken care of by an orphanage. This triggers him to desert his children. Lakshmi, Ramu and Munna are now left to the elements. While experiencing hardships day in and day out, you really start feeling for these children. And more remarkable is how brilliantly they perform their part. Baby Farida is excellent, Master Ramu is very sweet and the baby is as babies should be!
Troubles multiply for the trio and they are thrown out of their home. While travelling in a train, Lakshmi and Munna are separated from Ramu, who lands up with a theatre company. Lakshmi and Munna are given refuge in a rich man's house, where Lakshmi works as a maid. But tragedies are far from over. Munna is kidnapped (not before Madhu, the son of Lakshmi's employer, puts his own gold chain around Munna's neck) by a crook. This gold chain will act as a talisman of recognition later. Munna is saved by two local men from the crook, who brings him up as their own. Lakshmi, resigned to her sad fate, stays back at Madhu's, and grows up to be a responsible and abiding woman, though a tad weepy. Madhu falls in love with her and promises to marry her after returning from his studies abroad (Sudesh Kumar looks quite good as the good doctor).
As luck would have it, Agha is happy with the alliance and readily agrees to get his daughter married to Ramu, after having promoted him to the post of a manager in his company. But here we see Sunil Dutt in grey. He is rude to Mahesh, who comes to him for justice, is nonchalant towards Lakshmi who comes to him for help and also lacks the integrity that one looks for in a hero (or rather in Sunil Dutt).
Mahesh saves Sarla (who is Madhu's younger sister) from two goons and they both fall in love. But, Sarla's father opposes the match. So, Mahesh pulls one trick after another to get close to Sarla. He wards off Shankar (the irritating Rajindernath), who is hell bent on marrying Sarla. In the process we see him waltzing to Gori chalo na hans ki chal with Sarla to the best effect.
But, as is expected the missing piece falls in place in the jigsaw and all frayed nerves are calmed. What is good is that the film does not resort to too much melodrama before the denouement. A tried and tested formula executed with a deft hand, that's what this family drama turns out to be...