The film begins with a prologue of Mumbai and how the city transforms the lives of people. Simran Desai (Neha Sharma) is an engineering graduate who leaves for Mumbai to pursue a career in the IT sector, under the only support of her father. She soon joins an IT company and becomes well settled in life. Things take a toll when the company she works for shuts down suddenly five months later, she faces financial hardship and is forced to move into a low-cost housing colony while searching for a new job. Her neighbour is Abhimanyu, aka Jayantabhai (Vivek Oberoi). Simran comes to know that Jayanta Bhai is a gangster who works for a don Althaf Bhai (Zakir Hussain (actor)). His only aim in life is to own a bar of his own. He had just been released from prison after serving a five-year sentence for taking the blame for a crime he did not commit on the orders of the don. Jayanta did the deed on the promise that his status within the don's gang will be elevated once he is released, but the promise was reneged. Though Simran is initially disdainful of Jayanta's roguish behavior, she gradually warms up to him after he takes her to a hospital all the way on his back when she overdoses of vitamin supplements and passes out in her room. Realizing Jayanta's friendly, caring and humorous nature despite his gangster background, she begins to develop romantic affections for him. Their relationship nurtures to the point that they end up getting intimate one day while drunk.