Mrunal Thakur and Soni Razdan have completed their portion of work in RSVP and Roy Kapur Films’ Pippa. Ishaan Khatter and Priyanshu Painyuli are still shooting their portions in the film being directed by Raja Krishna Menon for producers Ronnie Screwvala and Siddharth Roy Kapur. It is based on The Burning Chaffees written by Brigadier Balram Singh Mehta.