Jay Jay is a 2003 Indian Tamil-language romance film written and directed by Saran. The film stars R. Madhavan, Amogha and Pooja, while Kalabhavan Mani, Charle, Dhamu and Malavika Avinash also play key supporting roles. Produced by V. Ravichandran of Oscar Films, the film had music scored by Bharadwaj. The core plot of the movie is based on the 2001 movie Serendipity. Plot Jagan (R. Madhavan) is a carefree youth who stays with his friends in a room. He plays violin well and seeks every opportunity to help others, at the same time benefitting himself. His father is an assistant of an unsuccessful politician (Delhi Ganesh) who works for two politician brothers. Their sister, Seema (Pooja), has a crush on Jagan after he saves her from some goons. On the other hand, is Jamuna (Amogha). Jamuna is a very beautiful young woman who is from Kolkata. Her father is very protective of her. Jagan spots her at a book store and falls for her instantly only to be beaten up by her father shortly afterwards. Jamuna apologises to Jagan. Jagan, unable to forget her, goes to the bookstore again in hopes of seeing her. Jamuna buys a book, kisses it and starts writing her name, only to be interrupted by Jagan. Jagan only knows her name starts with J. They have a cup of coffee and Jagan shares his interest in marrying her. Jamuna, who deeply believes in destiny, writes her name and address in a 100rs bill and tells Jagan that if either of them get hold of the bill by 1 year, she would marry him. She than pays the waiter. When Jagan goes to the waiter to take back the bill, it is given away. Jamuna goes back to Kolkata and Jagan is lost. Jagan starts looking for the bill and his friends help him. Jamuna, who is in Kolkata get a proposal from her family friend, Guna(Shasikumar). She remembers Jagan's proposal and realizes she has fallen in love with him. She also looks for the bill with the help of her cousin, Meera (Malavika Avinash). Under spam circumstances, Jagan gets engaged to Seema who later realizes the truth about Jagan look in for Jamuna. Jamuna gets hold of the bill while eating Pani Puri but the money is snatched by a petty thief. She breaks down and upon seeing this, Meera scolds her of abandoning Jagan