The youngest popular Kollywood producer Udhayanidhi Stalin is debuting as a hero through the film Oru Kal Oru Kannadi. Hansika is pairing with Udhayanidhi Stalin in OK OK. Santhanam joins Udhayanidhi Stalin to tickle the ribs of the audience. Rajesh who is well known for his comedy gimmicks has directed this film. He had earlier directed films like Siva Manasula Sakthi and Boss Engira Baskaran. Harris Jayaraj has composed the music for the film OK OK. The song which begins with the line Vanciram Meenu Vavvalu has already become popular become among the youth. The film has been certified by a U certificate which would facilitate the producer to apply for tax rebate because of its clean content. The film is to hit the screens on 6th April.