The movie start with, Rahul Malhotra is the caretaker of a garment company with a pending order of a hundred thousand shirts to Sindhi Businessman Mr Bijlani. Rahul is also the guardian of his deceased sister's mischievous kids: Sunny, Munni, and Vicky. He finds it hard to control the kids, as he is new to this. When the kids cause trouble, Rahul punishes them by locking them up in their room. However, the children escape and head for a carnival in town.
Vyjayanti Iyer is the bubbly daughter of Mr Iyer, a South Indian businessman and Carnatic music lover. Her father wants her to marry Natarajan Iyer, a Carnatic music legend, who is somewhat creepy. Vyjayanti refuses to marry him; as punishment, she is locked up and escapes. She meets the three kids at the carnival and they become friends. Vyjayanti explains that she has no home so the children invite her to stay with them.
The children go to great lengths to hide Vyjayanti from Rahul. In a row of hilarious sequences, they are always one step ahead of Rahul before he can discover Vyjayanti. Two nights later, however, Vyjayanti is revealed. Initially angry, Rahul sees that the children love her so he gives her a job as the children's governess. Vyjayanti begins to live with Rahul and the kids and slowly falls in love with him.
And then there enters seductive, glitzy Maya, Bijlani's daughter, who is obsessed with Rahul. She wants to marry Rahul, and Rahul approves, deciding it would benefit the children. When Vyjayanti and the children find out about Maya and Rahul's upcoming engagement ceremony, Vyjayanti is heartbroken and the kids are upset, as they dislike Maya. On the day of the engagement, Vyjayanti explains to the kids that she loves Rahul and wants to marry him. The kids come up with a plan to stop the engagement. They crash the party with a dramatic act, which successfully postpones the engagement but leads to Rahul losing his temper. Back home, he scolds Vyjayanti and she admits that she loves him, shocking him.
The next morning, Bijlani comes with Maya to offer Rahul a second chance. Rahul defends Vyjayanti against their insults, thereby expressing his own feelings for her. The mischievous kids chase Bijlani and Maya out of the house with rotten eggs and tomatoes. As revenge, Bijlani and Maya set on auctioning Rahul's house. Rahul asks his workers to work overtime to complete the shirt orders, which the supportive workers agree to do. A successful two lakh shirts are made and loaded onto a truck to be delivered to Bijlani. Bijlani hires some thugs to ensure that the truck doesn't arrive on time. Much to their distaste, Rahul arrives on time with the order, and Bijlani and Maya are arrested.
Vyjayanti is finally reunited with her father, who disapproves of her marrying anyone outside the Iyer clan. All the factory workers, Rahul's colleagues, and the children ask him to allow Rahul and Vyjayanti to marry. He continues to stand by his decision until Natarajan himself supports the couple, eventually leading Iyer to accept Rahul and Vyjayanti's marriage on the condition that they would marry in a South Indian ceremony. The movie ends with Rahul's marriage to Vyjayanti.
