Kadhal Kavithai is a Tamil

Tamil language

Tamil is a Dravidian language spoken predominantly by Tamil people of the Indian subcontinent. It has official status in the Indian state of Tamil Nadu and in the Indian union territory of Pondicherry. Tamil is also an official language of Sri Lanka and Singapore...

 film directed by director Agathiyan

Agathiyan

Agathiyan is an acclaimed Tamil film director. He has won National Film Award for Best Directing as well as National Film Award for Best Screenplay in 1996 for the Tamil film Kaadhal Kottai...

. Prashanth

Prashanth

Prashanth is an Indian film actor who appeared in several Tamil films, as well as a few Telugu films, Hindi and Malayalam films.The son of noted actor-director Thyagarajan, Prashanth began his career at 17 by appearing in Vaigasi Poranthachu and went on to feature in other acclaimed films...

 and Isha Koppikar acted as the lead pair in this film. A majority of this film was shot in London. The film was declared a hit. Isha Koppikar debuted with this film. Karan

Karan (actor)

Karan is an Indian actor. He started his career as child actor under the name Master Raghu for more than 20 films in Malayalam. Ina and Kuyiline Thedi were huge hits. After turning 20, he acted in Tamil films where he made his debut in Nammavar starring opposite Kamal Hassan...

, Roja

Roja Selvamani

Roja is a South Indian actress and politician. She is presently with YSR Congress party.-Early life:Roja was born in 1972 in Tirupati, Andhra Pradesh. She learnt Kuchipudi, a dance form, for a few years. She has two brothers Kumaraswamy Reddy and Ramprasad Reddy.-Film career:Roja entered the...

 and Raju Sundaram

Raju Sundaram

Raju Sundaram is a Kollywood cine artiste who acts, directs, and choreographs for films. He is an eldest son of dance master Mugur Sundar, and elder brother to Prabhu Deva and Nagendra Prasad.-Birth:...

 made guest appearances.

Plot

Vishva (Prasanth) spends his time hanging out with Charlie to avoid his mother (Ambika

Ambika (actress)

Ambika is an Indian film actress. She was worked in Tamil, Malayalam, Kannada and Telugu films. Ambika's sister Radha was also an actress. Both of them acted in a number of south Indian films in 80s and they have a movie studio called "ARS Studios"....

) who always quarrels with his dad (Manivannan

Manivannan

Manivannan is a popular Tamil actor and director. With over 400 films to his name, Manivannan is one of the most experienced actors in the field. He normally plays the role of a dad or a senior comedian.- Background :...

). To find peace, he plays tricks on others. Among the victims is Jothi (Isha Koppikar). The story moves to London, where Prasanth visits Princess Diana's grave and leaves a beautiful poem behind. At the same time, Isha too visits the grave and leaves a note after reading the poem. Then begins a warm relationship between Isha Koppikar and Kasthuri. In "Kaadhal Kavidhai", Isha Koppikar and Prasanth love one and another without seeing each other. Kaadhal Kavithai is a movie where the man knows the girl but doesn't know that she is the one he is in love with.
Kasthuri plays a glamorous role in the movie. It grossed 1 million$ at the box office.