Hum Tum is a Bollywood

Bollywood

Bollywood is the informal term popularly used for the Hindi-language film industry based in Mumbai , Maharashtra, India. The term is often incorrectly used to refer to the whole of Indian cinema; it is only a part of the total Indian film industry, which includes other production centers producing...

 movie, released in India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

 on 28 May 2004, directed by Kunal Kohli

Kunal Kohli

Kunal Kohli is an Indian film director, producer and writer- Biography :Born in Mumbai,Kunal Kohli is a true Indian director. He is a "family man" as he claims on a video interview....

 and produced by Aditya Chopra

Aditya Chopra

Aditya Chopra is an Indian film producer, screenwriter and director. He is most known for directing his only three films Dilwale Dulhania Le Jayenge , Mohabbatein , and Rab Ne Bana Di Jodi...

 and Yash Chopra

Yash Chopra

Yash Raj Chopra is an Indian filmmaker, film director, screenwriter, and a highly successful Bollywood producer. Waqt, Deewar, Kabhi Kabhie, Silsila, Lamhe, Chandni, Darr, Dil To Pagal Hai, and Veer-Zaara are some of his highly popular movies...

. The movie stars Saif Ali Khan

Saif Ali Khan

Saif Ali Khan is an Indian actor known for his work in Bollywood films. He is the son of the late former Nawab of Pataudi, Mansoor Ali Khan Pataudi, and actress Sharmila Tagore. He has two sisters: Saba Ali Khan and actress Soha Ali Khan....

 and Rani Mukerji

Rani Mukerji

Rani Mukerji is an Indian film actress who works in Hindi movies. In the course of her film career, she has received six Filmfare Awards, among twelve nominations....

 in the lead roles.

Hum Tum follows the encounters of the two main characters until they, after several years and various meetings, become friends and finally fall in love at the end of the movie. The comic characters Hum and Tum have their own animated sequences in the movie, where they represent the current state of Karan's and Rhea's relationship.