Tu Hi Meri Shab Hai|Gangaster|Emraan Hashmi|Kangana Ranaut|Shiney Ahuja|Pritam ChakrabortySimran (Kangana Ranaut) drowns her misery in booze. Her one friend in Seoul is Aakash (Emraan Hashmi), a singer in an Indian restaurant.

Originally a bar dancer in Mumbai, India, Simran is the girlfriend of a notorious gangster, Daya (Shiney Ahuja). Five years ago, Daya's boss Khan (Gulshan Grover) ordered him to give Simran up. When Khan threatened Simran, Daya turned on him and Khan cut Daya loose from his gang.

She and Daya were forced to flee to Seoul. They took a small boy named Bittu with them. After an encounter with the Mumbai police, Bittu was killed, causing a strain in the couple's relationship and pushing Simran toward alcoholism. Leaving Simran alone in Seoul, Daya went to work in Mauritius and then Dubai.

Aakash tells Simran that he cares for her despite her past, and their relationship gradually develops from friendship to love. Daya, who is still in Dubai, suddenly comes to Seoul. When he learns of Simran's affair with Aakash, he attacks and severely beats him in a fit of rage and jealousy. Daya then professes his love for her and promises to reform and fulfill her dreams of a normal life; he also tells her that if she truly loves Aakash he will not hold her back. Before Simran can respond, the police arrive in pursuit of Daya and Simran. The two flee.

Daya gives up murdering innocents and begins working odd jobs, admitting to Simran that he has found peace in doing honest work. He says that he would like to return to his village in India with her, so that they might live there peacefully. To do so he would have to perform one last crime: fake passports for him and Simran.

Simran, who is longing for Aakash, soon discovers that she is pregnant with his child. When she tells Aakash, he meets her and tells her he would like to marry her, but they will never find peace as long as Daya is at large. He says that for the sake of their unborn child, Daya must be turned in to the police and only Simran can do this. Simran, who is still emotionally attached to Daya, refuses.

Meanwhile, Daya, who has gone to forge passports for himself and Simran, is intercepted by Khan, who reminds Daya of what had occurred between them years before and says that he intends to make an example of Daya for abandoning the gang. Khan and his men severely beat and wound Daya, who is eventually able to fight back and kills Khan. He then calls Simran, warning her that the police are after them and asking her to meet him outside a Seoul train station that night.

Simran arrives at the appointed time to find Daya badly injured from his fight with Khan. He manages to crawl to Simran and takes out a box of sindoor for her. But just as he reaches and embraces her, they are surrounded by police cars. Daya realises that Simran informed the police; heartbroken and screaming, he is hauled away. Simran remains at the station until morning and then goes to meet Aakash, whom she fi