Plot
In 2019, Isai ended her relationship with the chauvinistic Honest Raj "Honest", on their last day of college. Honest challenged Isai that he would win over a girl's heart and establish a successful life, proving Isai wrong. Four years later, Honest remains a failure in love and jobless. Honest attempts to earn Rs. 5,000 to pay off a sextortion threatener and takes on a job as a housekeeper at a villa, unaware that it belongs to his former lover, Isai. Isai tests Honest's potential as a housekeeper through her maid, Jothi, and although he fails, Isai hires him as her househelp. Honest uses the advance payment to settle the sextortion debt, but deceives his family, claiming he landed a job at an IT company. Honest's unintentional involvement in Isai's official meeting leads to embarrassment, prompting Isai to humiliate him in front of their college friends by revealing his true occupation as her house helper. Isai also slaps Honest, but soon she understands that his actions were unintentional and regrets slapping him.
Honest and his family embark on a journey to meet his prospective bride, Priya. However, their autorickshaw runs out of fuel and breaks down near Isai's villa. Isai offers them a ride to Priya's house. Honest likes Priya and Isai relieves him of his househelp duties to enable him to secure a better job. However, Honest continues working as Isai's househelp until his marriage is confirmed. Isai grows closer to Honest and his family, and she also discovers that Honest secretly provided her with food during her last semester of college, when her parents were abroad. Touched by Honest's care, Isai accepts him as her best friend and also mentions that she is going to love someone, but Honest misinterprets this as a romantic confession. Consequently, Honest calls off his engagement to Priya, while Isai starts dating her colleague Harish and eventually falls in love with him. Advised by Roman, Honest behaves like a perfect gentleman, leading Isai to believe that he only considers her a friend.
Isai trains Honest and secures him a job at her company. However, her growing closeness to Honest irritates Harish. Honest assumes that Harish and Isai are just friends, while Harish advises her to distance herself from Honest, suggesting that he might become possessive and propose to her. Days later, Isai invites Honest to her home, leading him to believe that she is finally ready to accept him romantically. At her residence, Honest is shocked when he realizes that Isai has merely friendzoned him. Heartbroken, Honest attempts to jump into the ocean but is rescued by Roman. From the next day onward, Honest becomes determined to win Isai's heart. However, his efforts are met with resistance from Harish and his friends, who physically assault him. Honest retaliates with the help of his gang, leading to a violent confrontation between the two groups. At the police station, Isai intervenes, warning Honest to back off while refusing to file a complaint against him, citing pity as her reason. Honest's parents grow concerned about him and after a conversation with his sister, Sangeetha, Honest realizes that he should have respected Isai's boundaries and not pursued her despite her rejection. He begins to distance himself from Isai.
Isai, meanwhile, discovers that Harish has been hiding his live-in relationship with Deepthi, leading to an argument between them. Isai begins to realize that she has misjudged Honest's intentions and failed to recognize his genuine love. Chokkalingam, Honest's father, encourages his son to move on, while Isai's father advises her to accept things as they are. Honest puts efforts to eventually bring a smile back to his mother, Kalyani's face, while Isai breaks up with Harish due to their differences. Isai resolves to confess her love to Honest but discovers that he is leaving for Singapore soon so she decides not to stop him. Six months later, in Chennai, Honest is running a housekeeping agency with his friends. Isai now decides to take a chance with Honest and proposes to him and they finally unite.
