Sathya Seelan, a designer who avoids marriage proposals, is eventually pressured by his frustrated sister into attending a matchmaking meeting arranged without revealing details about the prospective bride. Reluctantly, he attends and meets Monisha, a social media influencer. Their initially awkward conversation takes an unexpected turn when Monisha realises that Sathya was her senior in school. Sathya shares his past with Monisha, recalling his school days with his friend Dinesh and his unrequited love for their classmate Anisha. Infatuated with her, Sathya once submitted a blank exam paper when she was absent and was punished by their teacher, Swaminathan. Though he plans to confess his feelings on Anisha's birthday, he fails to do so. On the school annual day, he resolves to confess, but Dinesh reveals that Anisha is already in a relationship with him, leaving Sathya heartbroken. Monisha then recounts her own past during her 10th-grade years at the same school, where she studied with her friends Vinu and Sandhya. A backbencher who stayed in the school hostel, Monisha once involved Balaji, a class topper, in passing a note during an exam, which led to him being punished when he refused to reveal her identity. Over time, she develops feelings for him and joins his tuition centre to grow closer. Despite intending to confess her feelings, she hesitates and fails. An incident later damages their relationship when a misunderstanding—originating from Monisha confiding in her friends—leads to Balaji being mocked by classmates. Hurt and angered, he distances himself from her. Before the academic year ends, Monisha attempts to reconcile by giving him a slam book, but circumstances prevent them from resolving their differences. After sharing their stories, Monisha suggests that before committing to each other, they should seek closure with their past relationships. Sathya agrees, and the two begin planning to reconnect with Anisha and Balaji. They contact Dinesh, who informs them that Anisha is married and living abroad but promises to obtain her contact details. As part of their search for Balaji, Sathya and Monisha travel to Tiruchirappalli for their acquaintance Santhosh's wedding. During this trip, Monisha reveals a past incident involving Sandhya and Santhosh, which led to a misunderstanding with their teacher Swaminathan. In the ensuing conflict, Sathya had once slapped the teacher. Encouraged by Monisha, Sathya later apologises to Swaminathan, and they reconcile. Meanwhile, Sathya receives a follow request on
Instagram from an anonymous user who also follows Monisha. Although curious, Sathya is unable to learn much as Monisha avoids discussing it. His insecurity leads him to check her phone without permission, where he finds that she referred to him as her "would-be." Upon discovering this breach of trust, Monisha confronts Sathya and asks him to leave. Later, after attending an after-party and reconciling while intoxicated, they share an intimate moment. The next day, Monisha dismisses the previous night as a consequence of intoxication. The two visit their former school, where they meet Jaffer, a junior of Sathya, who helps them locate Anisha, who is temporarily back in India. Sathya meets Anisha and confesses his past feelings, and the two part on amicable terms, gaining closure. That night, Sathya learns that the anonymous Instagram user is Balaji. The following day, Sathya and Monisha meet him. During the meeting, Sathya briefly steps away and later sees Balaji hugging Monisha. Misinterpreting the situation as a reconciliation between them, he leaves without confronting either of them. Distressed, Sathya drunkenly calls Dinesh, expressing despair. Concerned, Dinesh, along with Jaffer, Santhosh, Anisha, and Sathya's family, gathers at his house the next morning. Balaji also arrives and clarifies that he had confessed his feelings to Monisha, but she rejected him, stating that she no longer reciprocates his feelings and wishes to be with Sathya. Realising his misunderstanding, Sathya rushes to meet Monisha. The two reconcile, resolving their differences and choosing to move forward together. == Cast ==