Prem Kumar Prem Kumar is on the verge of marrying Dhanalakshmi Dhanalakshmi. Just two days before the ceremony, his tight-knit group of friends—Bucks, Balaji Balaji (alias Bhaji), and Saras Saras—decide to celebrate with a casual game of cricket. During the match, Prem tries to catch a ball hit by Bhaji, but hesitates, drops it on the back of his head, then rises and insists he’s fine. After the game, the friends notice Prem muttering repeatedly about the events that led to his injury, a sign that something deeper is wrong.
Back at Bucks’ house, a disturbing pattern emerges: Prem is dealing with anterograde amnesia, a short-term memory loss that wipes out the past year from his mind, erasing memories of the impending marriage to Dhanalakshmi and even the bike that was stolen days earlier. Yet he still recognizes his friends, a detail that deepens the confusion and concern among them.
Worried, the trio takes Prem to a local hospital, where a doctor confirms the diagnosis and admits him for care. They decide to keep his parents and Dhanalakshmi in the dark about the condition, a choice that weighs heavily on them as they try to protect him while searching for a way to help. They also bring in Prem’s Prem's Father to keep the situation from him, hoping for a quiet resolution while navigating medical advice and mounting uncertainty.
The situation grows tenser when Bucks’ boss arrives and shares a cautionary tale of a man who developed amnesia after an accident and never fully recovered. Burdened by fear, the friends improvise: Bhaji is left in charge for the night with Prem, in the hope that time and care might restore him, even as Prem continues to stay in the same condition the next day.
As the wedding day arrives, the doctor restricts discharge, but the trio orchestrates a plan to sneak Prem out in time for the ceremony. They take him to a hair salon to ready him for the vows, and a surprising sight—Prem’s father—is there—adds to the tension, yet they manage to keep everything hidden from him. They bring Prem home, where no one suspects a thing pending the reception.
At the wedding reception, keeping Dhanalakshmi and Prem together proves difficult because Prem cannot recall her or the history they share. He comments on Dhanalakshmi’s appearance in ways that distress her, but the friends work to keep the situation under control. A pivotal moment arrives when Saras reveals that he helped Prem with schoolwork during high school, explaining why Prem has always looked up to him. This revelation strengthens the bonds among the trio and lends hope that Prem might be better off with his memories intact.
The next day, the ceremony is officially complete, yet Prem resists recognizing the significance of the moment, insisting he doesn’t know Dhanalakshmi and that a girl he once liked in school still lingers in his memory. With patient persuasion from Saras, Prem ultimately ties the wedding knot, and tears flow from the friends’ eyes as relief washes over them—even as the fragile memory of the moment lingers.
Back at the hospital, the doctor reprimands the group for sneaking Prem out, but is surprised to learn the wedding went ahead successfully. He notes that Prem hasn’t slept well in the days leading up to this, prescribing sleeping pills to help him rest. The following day, Prem’s condition appears the same at first glance, but he begins recounting events and reveals that his memory has begun to return. The friends celebrate, though Prem remains confused by the fact that the wedding has passed and he cannot fully remember it. In the end, the group returns home with Prem, relieved that the core bond remains even as memory continues to recover.
