Youthful and upbeat, this romantic drama traces the twists and turns in the life of Ravi, a thrifty young man who belongs to a middle-class family and runs a small business. Ravi shares a very special friendship with Aparna whom he fondly calls Apu. Ravi and Apu have been best friends since childhood as they live in the same apartment complex and Apu has always been there for him no matter what, especially when it comes to helping him out with money. Not knowing life without one another, they take each other's presence for granted and never express their feelings for each other.
At this critical juncture, Ravi develops a crush for Ruchi, a new neighbour who has recently moved into the flat opposite to his own. Ruchi enjoys all the attention and gifts she receives from the opposite sex and is quite a flirt . Ravi who believes he is deeply in love with Ruchi, writes a love letter to her and requests Apu to pass it on to Ruchi without revealing the source.
Apu reads the letter and finds the content of the letter very childish. She re-writes the love letter making it more expressive and passes it on to Ruchi. The letter has the desired effect on Ruchi and she loves the idea of having a secret admirer.
One fine day, Ravi introduces himself as the person who has written the love letter and they start dating each other. The love letter accidentally changes a few hands and leads to a whole lot of misunderstandings and confusion, especially between Ruchi's father and Ravi's mother.
Apu starts feeling lonely and hurt that her best friend is so blind to the truth and during this period she realizes her true feelings towards Ravi. The last act comes, when Ruchi invites Ravi to her place saying that she is all alone and that she wants to give a 'special gift' to him on her birthday. Before Ruchi bestows her `special’ gift upon Ravi, their parents storm into the flat and it leads to a comical mayhem which ends with each character waking up to their own folly.
Apu in the meantime has been accepted into medical college and is about to leave town. Ravi gets a chance to read the letter he had written to Ruchi and realizes that it was Apu who had written the letter to prevent him making a fool of himself. The movie ends with Ravi being forgiven by Apu after he honestly expresses how he feels about her.