Nallavanukku Nallavan

Uma, an orphaned woman, seeks refuge at Manickam's home as criminals close in. He rescues her from danger and learns she is a missing person, then drops her at her house and confronts the abusive uncle Sadhasivam. After protecting Uma, the two marry and Manickam surrenders to police inspector Azhagarsamy for his earlier acts.

Moments after his release from prison, Manickam is reunited with his newborn daughter Priya, signaling a fresh start for his life. This moment anchors his commitment to a peaceful life for his family.

Gangadharan, a friend of Azhagarsamy, offers Manickam a job at Victory Industries. Manickam begins building a new life as he takes on his duties at the factory.

Gangadharan becomes bankrupt and plans to close Victory Industries as debts mount. Manickam persuades him to give him a chance to revive the business, and through hard work he starts repaying the debts.

As a token of gratitude, Gangadharan dies and entrusts all his wealth to Manickam. This gift strengthens Manickam's influence and responsibility within the family.

Several years pass and Manickam runs Victory Industries to everyone's satisfaction, while also overseeing the financial affairs of Gangadharan's family.

Vinod, Gangadharan's spoiled son, dislikes Manickam, believing he swindled the family business. He lures Priya and brainwashes her, causing her marriage to him and driving a wedge between her and Manickam/Uma.

Uma dies of cardiac arrest, leaving Manickam to cope with a new family crisis. Her death deepens the strain within the already troubled family.

Manickam donates all his wealth and properties to Vinod, and explains that he never swindled his father's business. The act is meant to secure Vinod's future and clear misunderstandings.

Sadhasivam tries to kill Vinod in a bid to usurp the wealth. Priya informs Manickam of the danger, prompting urgent action.

Manickam arrives, defeats Sadhasivam's thugs and saves Vinod. His ally Thakkali ties up Sadhasivam to be taken by the police.

Manickam makes amends with Vinod and Priya and plans to return to his old house. Priya dissuades him, revealing she is pregnant with Vinod's child, sealing a new chapter for the family.