Mudhal Nee Mudivum Nee

The film opens with the 11th year at a Catholic school. Vinoth and Rekha's relationship is known to only a few of their friends. Rekha gifts Vinoth a guitar for his birthday, reinforcing his dream of becoming a music director.

Victoria/Vicky joins the Commerce stream and instantly thinks Vinoth is in her orbit. Vinoth superficially resists the flirtation, while Rekha, now in Science with the boys, begins to feel the strain of less time together. The stage is set for jealousy and shifting loyalties.

As the new term unfolds, Catherine, Richard, and Francis join the circle. Catherine mocks Chinese, who has feelings for her, while Richard exerts control and pushes limits. Francis is frequently bullied by Richard, highlighting an imbalanced dynamic within the group.

Rekha grows jealous of Vinoth's closeness with Vicky, despite Vinoth's denials. After she sees them playing basketball, Vinoth starts keeping his distance from Vicky. The tension signals trouble in their relationship and foreshadows future distrust.

On the farewell day of their 12th year, Rekha learns about Anu and Chinese's relationship and rushes to tell Vinoth. Vicky asks for Vinoth's help to move a box from a tall shelf in a secluded room, during which a dust speck triggers a kiss on Vinoth's cheek. Rekha witnesses the moment and leaves in distress, sparking their eventual breakup.

In the wake of the kiss, Vinoth has a bitter argument with Rekha and rejects Cupid's counsel to reconcile. Cupid arrives and hints that time itself could be bent to repair what was broken. The scene hints at a chance to reset the past, setting up the time-travel turn.

Vinoth awakens in the 1990s timeline and rushes to Rekha's home to apologize. Rekha forgives him, and they reconcile, changing the course of their romance. The moment marks a crucial pivot point for both their lives.

The narrative cuts to the present where Vinoth is a successful, famous music director but is seemingly unmarried and unfulfilled. Chinese visits him as they prepare for their school reunion. Rekha returns in the present with her fiancé Sid, signaling a different path for the couple.

At the reunion, the friends reveal their lives: Catherine is a successful author, Richard is married to an alcoholic, Surendar remains a bachelor, Naushad is a physician with a new wife, and Anu is married to a talkative husband. Rekha attends with Sid, while Chinese is married to Anu and is directing sitcoms. The gathering shows everyone in different, thriving life paths.

Catherine reveals her past antics; Chinese and Surendar recount their own struggles, from divorce to financial strain. They end up at Catherine's home, cooking, laughing, and sharing a night together, offering a break from their present-day façades. A child’s voice from Catherine’s world reveals the complexity of adulthood.

During the reunion, Vinoth reluctantly takes the stage and performs a song he wrote for Rekha. Rekha is moved and they share a private moment as they listen together on an earbud, revealing lingering feelings. Rekha bluntly asks Vinoth to show her more songs, and in a dramatic turn she plants a passionate kiss on his lips before leaving.

Cupid appears again, hinting that someone has guided them at key moments and that Vinoth should seize another chance. He grants Vinoth the opportunity to return to the 1990s and reset the course of his relationship with Rekha. The sequence blurs lines between memory and possibility and clears the way for a different ending.

Vinoth wakes from the vision and races to Rekha's home to apologize, leading to a renewed reconciliation in the 1990s timeline. The film then shifts to a present-day montage where Vinoth and Rekha are happily married with a child, surrounded by friends who have found their own happiness. Cupid reveals that he has nudged each character toward the right decisions, though none remembers him.