Once Upon a Time in Mumbaai is a 2010 Indian Hindi-language neo-noir crime thriller film written by Rajat Arora and directed by Milan Luthria. It stars
, Emraan Hashmi, Kareena Kapoor and Randeep Hooda. Produced by Ekta Kapoor under the Balaji Motion Pictures banner, Once Upon A Time in Mumbaai was released on 30 July 2010 to generally positive reviews from critics, and was a commercial success. The film is loosely based on the lives of Mumbai underworld gangsters Haji Mastan and Dawood Ibrahim. A sequel, Once Upon ay Time in Mumbai Dobaara!, was released in 2013.