New Delhi, Aug 4 (UNI) Bollywood actress Prachi Desai has begun shooting for her next venture, fantasy adventure project titled 'Kosha ', trade sources said today. Last seen in 'Rock On 2', Prachi will be experimenting with a new genre called 'Kosha', touted as a “dark urban fairy tale”. The film revolves around a girl who is a rock band member with a history of “alcohol and substance abuse”. Trade sources said Prachi 's character in the film, helmed by late filmmaker Raj Kanwar’s sons, Abhay and Karan, is based on an original comic strip. Prachi took to Twitter to share her look from the film. 'Aboard a new Fantasy Adventure Kosha. Dark Urban Fairy tale wish us luck,' she tweeted. The film is directed by debutant Amman Advaita. Prachi was last seen in Rock On 2, the sequel to 'Rock On '. UNI AR RSA 140