Complex sentence: It stars Vidya Balan as Vidya Bagchi, a pregnant woman searching for her missing husband in Kolkata during the festival of Durga Puja, assisted by Satyaki "Rana" Sinha (Parambrata Chatterjee) and Khan (Nawazuddin Siddiqui).
Split into simpler sentences: It stars Vidya Balan as Vidya Bagchi, a pregnant woman searching for her missing husband in Kolkata during Durga Puja festivities. She is helped in her quest by Satyaki "Rana" Sinha (Parambrata Chatterjee) and Khan (Nawazuddin Siddiqui).