Bala, a shy and reserved government employee from Pithapuram, meets Bhagyalakshmi through a match arranged by his parents. They fall in love with each other, and their marriage is fixed. But on their wedding day, a woman arrives with a child, claiming Bala is the father. He admits the child is from a past mistake, and the wedding is called off. What was Bala's mistake, and why did he hide it?