Kadhal Virus is a 2002 Indian Tamil-language romance film written, directed and produced by Kathir. The film featured Richard Rishi, Ajith's brother-in-law, and Sridevi Vijaykumar, Vijayakumar's youngest daughter, making their acting debuts in the film, with Abbas in a supporting role. A. R. Rahman composed the music for the film, while Arjun Jena was the cinematographer for the project. The film tells the story of a young director, trying to pursue his dream by overcoming all hurdles. After much delay, the film opened in December 2002. Unlike his previous two films Kadhal Desam (1996) and Kadhalar Dhinam (1999), Kathir's Kadhal Virus was panned by critics and fared poorly at the box office.

Plot

Deepak is a budding filmmaker trying to get his first production out. He gets a chance to go to Coonoor to write a script for a movie where he meets and falls in love with Geetha. After a struggle, Geeta understands his love and convinces her father. The couple decide to get married once his first film is made. Deepak leaves for Chennai, promising to write letters to Geeta. However the postman who is secretly in love with Geeta hides all the letters sent by Deepak, including the later changing his address. A chasm develops between the lovers because of the communication issue caused by the postman.