The film begins at a journey in train where Paari (Jiiva) looks back at everything. Cut to the beginning, one remote village in Ramanathapuram. Paari is a do-gooder helping everyone in need. A magnanimous man, he gives anything and everything to others if they ask for. Promising his father Vasu (Azhagam Perumal) to earn more, Paari sets out to Chennai but faces more challenges. He meets a young girl Madhi (Poonam Bajwa) and falls in love with her. Some goons also cause trouble for Paari. Meanwhile, Sivamani (J. D. Chakravarthy), the dreaded but sophisticated don of the city, is getting ready to marry Madhi. When the two stories meet, chaos ensue. It is up to Paari and Sivamani to sort it out.