Sathya, a philanthropist who now runs an orphanage, has to go to Poland for the treatment of young Janu. While there, an international criminal named Ghost carries out heists. Who is Ghost? And what has Sathya got to do with it all?

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 and grandfather Linga were dons. They also lost their theatre Cinema Paradise and had to sell it to Kumarasamy Chettiyaar (Suresh Chandra Menon). So his mother fears he will also become a don. Junga tells his mother he will not be a don and will retrieve their ownership of the theatre. He goes to Chennai with Yo Yo (Yogi Babu) 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 sarees for each day of the year. One day, Junga comes to know that the theatre is being brought down and 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 theatre, but Chettiyaar insults him. Junga challenges Chettiyaar that he will retrieve back his theatre. 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 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 theatre in exchange for Yazhini. Yazhini and Junga later get married.

Thilak (Vijay Sethupathi) is a news anchor who works for Zen One TV, which is run by Kalyan (Akashdeep Saighal), a corrupt and unethical media baron who uses blatant sensationalism to gain TRP and is closely associated with Dheeran Maniarasu (Bose Venkat), a corrupt and powerful politician. Kalyan ensures that his channel does not report anything negatively about Dheeran and receives kickbacks in return. Also working for Zen One is Malar (Madonna Sebastian), Thilak’s ex-girlfriend. Though Malar avoids Thilak initially, she soon realises her feelings for him, and they get back together.

Kathir (Vijay Sethupathi) is a wannabe rowdy, whose only aim is to run a bar on his own. He is just back from five years of prison life and it was for his area councilor, who promised him to provide a posh life. Then, we have Yazhini (Madonna Sebastian) who loses her IT job during recession and due to financial crisis, she stays in the small flat opposite Kathir. The rest of the film is all about how these two people with drastically different dreams gel with ease and develop a liking for each other.