Directed by Milan Luthria and showcasing the mysterious web of Mumbai's underworld, the movie 'Once Upon a Time in Mumbaai' is gearing up to keep the audience glued to the screen right till the end.  The movie is said to be based on the lives of Haji Mastan and Dawood Ibrahim.

Set in 1970's and seen through the eyes of a police officer, the movie revolves around the rise and fall of infamous gangster Sultan (Ajay Devgn) who  is the most dreaded man in  the whole city of Mumbai, and how his protégé Shoaib (Emraan Hashmi) challenges his supremacy leading to a power struggle for dominating the underworld. The movie is a realistic portrayal of Mumbai's underworld.

With excellent performances by Ajay Devgan, Emraan Hashmi, Prachi Desai and Kangana Ranaut, this power-packed movie will surely be a breathless watch for everyone!