Manodu movie is all about the story of a young man Viswam (Bharat) who rises from utter poverty to riches, by unfair means like charging commission from creditors for recovering their loans, though advised against it by his parents and friends. All that he treats as important is money and thinks that there is nothing he cannot achieve with money. Saying so, he walks out of home.
'Mirchi' - a girl with a story of her own behind her, lives with Ram and half a dozen members of the dandha, two of whom are girls.
When a girl is gang raped – as the young man pretending love for her takes her to a room to rape her, ten others in the room too rape her - the leader orders that the one who pretended love for the girl to marry her. This he feels will be a punishment for the young man because it would make him suffer as he would recall every day what he had done to her.
They await a chance to wipe off this gang. They get the chance when Viswam falls in love with a girl (Radhika). He is the son of a schoolteacher, respected by persons from all sections of life – right from the police to the bureaucracy. When the police arrest Viswam, the father to get him released, runs from pillar to post only to learn in the end how bad his son is, and how he extracts money from others. He is a disappointed man and dies of a heart attack. The commissioner of police, also a student of the teacher, helps his son's release. This begins the destruction of the network he works for and his realization that this kind of negative approach would never be acceptable to society.