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The film unfolds as a black comedy after the death of a man in a bus accident. Corrupt cops try to hush up the case, making the bereaved father (Biswajit) accept that his son was killed when a tree fell on him. Biswajit tries to cope with the grief and injustice in silence, but his daughter-in-law (Paoli) decides to protest. This opens a new chapter, as two political aspirants (Sabyasachi and Paran) try to manipulate the tragedy for political mileage. Meanwhile, the bus conductor (Rahul) who is madly in love with the bus now falls for Paoli.

The creators of the Rajinikanth starrer Chandramukhi have decided to take the story forward with Venkatesh in Nagavalli. The film will see Venkatesh playing three characters, with as many as seven actresses sharing the screen with him.

While the honeymoon couple, Munna and Monicka, make merry, Monicka is haunted with a few incidents and strongly feels the possibility of a stalker intruding their private lives. To make matters worse, her friends are brutally slaughtered by a stranger. When things go out of hand, she spills the beans about the party-hard and blind date lifestyle of her roomies before marriage and how it culminated into the murder of an innocent man. And the worst of her fears are realized when the stalkers identification is revealed.

This is the story of a love triangle where Shankar (Manoj Kumar) and Shobhana (Mala Sinha) are in love whereas Rita (Shashikala) is his sworn bride since childhood. Shankar marries Rita as per family wishes but their ill fitted marriage does not provide either of them any solace. The situation worsens when Shobhana enters their lives again.