The film starts with Inspector Manimaran (Vinoth Munna) taking the job of Don Junga's (Vijay Sethupathi) encounter, along with Duraisingam (Rajendran). On the way to his encounter, Junga tells his story. Back in Pollachi, he works as a bus conductor and is in love with Thoppuli (Madonna Sebastian). He gets involved in a fight, which angers his mother (Saranya Ponvannan), as his father Ranga (Vijay Sethupathi) and grandfather Linga (Vijay Sethupathi) were dons. They also lost their theater Cinema Paradise and had to sell it to Kumarasamy Chettiyaar (Suresh Chandra Menon), so his mother fears that he will follow Ranga and Linga and also become a don. Junga tells his mother that he will not be a don like Ranga and Linga and will retrieve their ownership of the theater. He goes to Chennai with Yo Yo (Yogi Babu), becomes a misery don, and starts saving money towards his goal.

He also leaves Thoppuli as she wants him to give her a luxurious life and gift her with 365 saris for each day of the year. One day, Junga comes to know that the theater is being brought down and that Chettiyaar is planning to sell it to a foreign company. He goes to Chettiyaar's house and gives him a crore to buy back his theater, but Chettiyaar insults him. Junga challenges Chettiyaar that he will retrieve back his theater. He decides to kidnap Chettiyaar's daughter Yazhini (Sayyeshaa), who is in Paris, so he goes there with Yo Yo, but the Italian mafia group kidnaps Yazhini to release their leader, who was arrested by the French police.

Junga tells Chettiyaar that he has kidnapped Yazhini and fights with the mafia group to rescue her from them. Yazhini and Junga escape, and Chettiyaar agrees to give Junga's family the theater in exchange for Yazhini. Yazhini and Junga later get married. However, Junga's friends ask for a success party, for which he gives them porridge. His friends are furious with the miser and therefore give information about Junga's whereabouts to the police. Manimaran tries to shoot the miser, but a lorry suddenly appeared, causing an accident and leading to Junga escaping.

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