Plot

A safe cracker claims he has lost his memory when two criminals come calling for their cut of the bank heist loot.

Sanju, Pandit and Idris rob a bank and decide to share the money. After executing the robbery successfully, the trio decide that Sanju keep the money for 3 months until the heat has died down. Problems arise Sanju forgets where he put the money, and when his partners return for their share. This leads to comedic scenes and wild chases for any leads that might get them close to the money.—vinay1493

Sanjay 'Sanju' Athray and Neetu (Vidya Balan) are married. Neetu is bored of her drab life & wants the comforts that money can bring. Sanju is an ex-con & wants to go straight. Sanju (Emraan Hashmi) is a suave, master safe cracker and offered to commit a heist by a middleman Pandit (Rajesh Sharma) with two dangerous criminals. The audacious bank robbery will ensure that he never has to worry about money again. He asks for time to consider. But the stressful situation at home with Neetu forces him to accept the offer.

Together, Sanju, Pandit & Idris (Namit Das) clean out a bank vault and make off with large sum of 35 Crores. After the bank robbery, Pandit decides that Sanju should keep the suitcase of money hidden (as Pandit and Idris already have record with the police, coupled with the fact that Sanju is married, and will be the least suspected by the police) and that they will meet after three months and then they will split the money.

But when they return for their share, they find that Sanju has apparently lost his memory and is maybe suffering from amnesia. Sanju tells them that a few months ago he had met an accident & was treated by Dr Gulati at Fortis Hospital. It's the accident that cased short term memory loss for Sanju.

To make sure they're not being ripped off, the bad guys move in with Sanjay and his wife Neetu, until he remembers where he hid the money. Sanjay tries to remember where he hid the money, but he cannot. Sanju searches the entire house & then digs up the entire front lawn but can't find the money.

Sanju is reminded by Neetu that the night of the robbery, Sanju had returned home very angry as one cab driver had struck his car. Neetu remembers that Sanju had noted the license plate # of the cab. Sanju traces the cab driver & finds that the incident happened near Rajesh Khanna garden, which is close to his friend's Uttam Nagpal (Parvin Dabas) house.

Uttam has recently shifted apartments to Pali Hill, after winning a lottery. Sanju believes that he had given Uttam the money to safe keep & Uttam used that money to buy his new apartment. Uttam's wife Priya has recently left him because he was having an affair. It is implied that Neetu & Uttam are having an affair.

Sanju finds an apartment address listed on his calendar & goes there. He finds a furnished, but uninhabited apartment & finds a suitcase. He takes the suitcase to Pandit and Idris, but it turns out it is only filled with books. Then a real estate agent calls Sanju & he realizes that the address on the calendar was of an apartment he was planning to buy with his share of the money.

Then Sanju finds that Uttam has left India for good & has gone to settle in London. Sanju blames Uttam for taking their money. Neetu tries to defend Uttam & Sanju then suspects Neetu of being complicit as well. Sanju also finds out that Neetu has purchased a one-way ticket for London. So, he goes to buy a gun to kill his wife Neetu in anger.

Pandit and Idris are getting impatient & decide to terminate Neetu & Sanju if Sanju can't give them the money in another day or so. Sanju goes back to Fortis to meet Dr Gulati & finds that he died in a car accident. Sanju believes Gulati was murdered.

Then Sanju finds that Neetu had a bank locker that he had no knowledge of. Neetu refuses to open the bank locker for Sanju's satisfaction. This deepens the distrust between Neetu and Sanju. Then Sanju receives an anonymous phone call, demanding money & threatening him with going to the police & revealing that Sanju looted a bank, if he does not comply.

Then Sanju meets the real estate agent by chance, who reveals that 3 weeks ago Neetu & Uttam also came by see to the same apartment that Sanju had visited earlier & found that suitcase in. Sanju confronts Neetu in front of Pandit & Idris & accuses her of trying to embezzle the entire 35 Crores in cahoots with Uttam. Sanju even says that Neetu had booked a 1-way flight to London as proof of her complicity in the fraud. Neetu counters saying that she is only going to visit her sister.

Under pressure and now frustrated, Pandit and Idris kidnap Neetu and ask Sanjay to meet them in a train station by writing a note and attaching it to the screen of his TV, on the third platform at 1:30am. When both Pandit and Idris confront Sanjay and demand the money, Sanjay claims that he doesn't even recognize the two.

When Sanjay tells them that Neetu knew where the money was, Idris begins to lose control. When he pulls the trigger on his pistol, he is shot dead by the unknown person (Shubhrajyoti Barat) and thereafter, he kills Pandit in a rage in the train.

The unknown person tells Sanjay that the bank robbery plan idea was his which he shared with Idris and Pandit but never got his share and after persistently questioning and trying to blackmail Sanjay, the unknown person shoots frantically in frustration and Neetu is injured, hoping that the traumatic vision of his wife's suffering will make Sanjay reveal the truth.

However, this fails since Sanjay has in fact lost all his memory by now, stressed by trauma. The original mastermind of the bank heist searches Sanjay's pockets, only to find a banana. In retaliation, he shoots Sanjay in the shoulder and then Sanjay's phone rings.

It is revealed that the caller is Sanju's mother who calls her son like every other day out of her motherly affection and concern. However, during the conversation, she subconsciously reveals that the suitcase has been kept at her home while remaining implicitly oblivious as to what is in the suitcase and further questions Sanju whether he will be coming to take the suitcase or not. She further expresses her desire to sell the brief case off if in case Sanju does not turn up to take away his belonging.

Meanwhile, the heist's mastermind overhears this and jumps on the train out of excitement, but he slips on Sanjay's banana skin and impales his neck on Sanjay's fork. Disillusioned, confused and tired, Sanjay throws his phone out of the train while Neetu smiles. Sanjay has no idea what's going on, but the train goes on its way with the dead bodies of the mastermind, Pandit and Idris