Jolly O Gymkhana

The film commences with Bhavani seeking absolution from Father Martin Luther King at church. In Meignanapuram, Thangasamy, along with his daughter Chellamma and granddaughters Bhavani, Shivani, and Yazhini, manage the Vellaikkaran Biriyani Hotel. This establishment has now witnessed a decline in business since the construction of a new bypass road. To stay afloat, the family resorts to usury, borrowing money from Rocket Ravi. They receive a substantial order from Tenkasi MLA Adaikalaraj for a bulk feast catering worth ₹2 lakhs. Despite not receiving an advance payment, the family prepares the dishes, only to be met with humiliation and violence when they approach Adaikalaraj for payment. Thangasamy is beaten, leading to his hospitalization and a critical surgery costing ₹25 lakhs. Bhavani reaches out to Rocket Ravi, their money lender, for assistance.

Lawyer Poongundran takes on a case against MLA Adaikalaraj, who allegedly scammed 28 families by using their signatures to obtain medical insurance money for himself. One of the victims, Sandhya, a puppetry artist, speaks out against the scam but is murdered by Adaikalaraj, with Reporter Kanniga as a witness. Despite this, Adaikalaraj manages to escape both the money scam and murder charges. As the election approaches, Poongundran intercepts ₹10 crore meant for voter distribution by Adaikalaraj and creates a joint account with Kanniga at UBC Bank in Kodaikanal and also rescues Sandhya's family, settling them in his mansion. Adaikalaraj, enraged, hires contract killer Pottu Bhavani to kill Poongundran. However, his associates mistakenly send the contract-killer's fee to Bhavani, who uses it to pay for her grandfather's surgery. Adaikalaraj's men demand the ₹25 lakhs back, putting Bhavani and her family in a difficult spot. Meanwhile, Thangasamy also suggests that Bhavani meet lawyer Poongundran, who is currently in Theni. However, upon arrival, they are shocked to discover that Poongundran has been poisoned to death by Pottu Bhavani.

Faced with a predicament, as they have provided their contact information at the hotel reception and left fingerprints in the room, the four women disguise Poongundran's corpse as a drunken individual and successfully exit the hotel. With the assistance of Bhavani's uncle, Murugesan "Mappumama," they transport the corpse to a public gathering and abandon it there, unaware that Mappumama is oblivious to Poongundran's demise. A riot erupts at the gathering, and Inspector Idithangi, while attempting to disperse the crowd, assaults Poongundran's lifeless body. The incident goes viral, and results in the inspector's suspension, amidst widespread public outcry. Furthermore, the Chief Minister, mindful of the party's reputation, removes Adaikalaraj from his position as Health Minister and replaces him with Omapudi Narayanan. Mappumama, unaware of Poongundran's fate, returns the corpse to Bhavani's family. Initially, they plan to dispose of the body by pushing it off a cliff. However, a phone call from Kesavan Kutty, requesting Poongudran to withdraw the ₹10 crore from his account, prompts a change of heart.

The family devises a plan to manipulate the corpse, utilizing an artificial limb designed by Shivani, a robotics engineer. Bhavani provides a voice dub, while Yazhini practices forging Poongundran's signature. After overcoming numerous challenges, including confrontations with Pottu Bhavani, a Telugu-speaking thug, and Inspector Idithangi, the family successfully transports Poongundran's corpse to Kodaikanal via car and bus. Upon arrival, they meet the bank manager Kesavan Kutty, who insists on obtaining Kanniga's signature, as the account is jointly held. Kanniga, who has also arrived in Kodaikanal, discovers Bhavani and confronts her, revealing the truth about the ₹10 crore. With a change of heart, Kanniga and Bhavani join forces to withdraw the money.

They are pursued by Adaikalaraj, Pottu Bhavani, Inspector Idithangi, and their accomplices. The group becomes trapped in Poongundran's mansion, where the four women using Poongundran's corpse, create a diversion, making it appear as though the dead body is fighting off the attackers. Kesavan Kutty witnesses the chaos and mistakenly believes that Adaikalaraj has killed Poongundran. Convinced of this, Kesavan Kutty agrees to release the funds from Poongundran's account. The corpse is then given a proper burial, and the family finds solace in fulfilling Poongundran's last wish.

The film concludes with Bhavani seeking forgiveness from the church father for utilizing Poongundran's corpse for their benefit.