Sameer Mehra, a business tycoon (Emraan Hashmi) takes shelter at an old man's home in the mountains amid a dangerous snow storm. He is introduced to Jagdish Acharya, a retired judge, Paramjeet Singh Bhullar, a renowned defence counsel, Anna Matthews, a house help and one Hariya Jadhav. They are later joined by Lateef Zaidi, a renowned public prosecutor who has a sharp wit and an eye for detail.
Lateef initiates a conversation with Sameer to check if he is the right subject for a practical game they play amongst themselves. Sameer introduces himself as a successful and ambitious executive of an ad agency who achieved everything on his own since he was orphaned from the age of 15. When Sameer takes a break, Lateef remarks to his friends that he is absolutely sure that Sameer is the right subject for their game, and as everyone values his opinion, they agree to this.
Everyone coerces Sameer to play the game, and he agrees. Later, Joe Cost, an ex-convict accused of murder, joins them. Jagdish tell Sameer that he had pronounced judgement in Joe's case as he was caught killing the person who sexually assaulted his sister, and now that he has served his sentence, they are all on good terms with him.
The game is basically a mock trial wherein they setup a court and argue about some famous cases. Sameer agrees to be their defendant as Anna has not prepared for a famous case Lateef had earlier asked her for. Jagdish tells Sameer his rights and tells him that he can meet his defence counsel, Bhullar, to discuss his case before the court starts. When they both meet in private, Sameer tells Bhullar that he has committed no crime so his case won't stand in court, but Bhullar opposes this, saying that going without any criminal charge in the mock court is dangerous since the prosecutor would then have complete freedom to charge him with anything. Sameer rejects this idea and says that he would go without any charge.
As the court starts, Lateef is able to extract intimate details of Sameer's professional life, to which Sameer naively answers all questions honestly in the beginning, but Lateef is able to correctly point that he had an affair with his boss's wife. On further inquisition, he concludes that Sameer colluded with his boss's wife to kill him and later advance to the position of the CEO. At this point, the mock trial becomes real and the judge notifies that charges are to be framed and the trial started. He then gives time to the defence to prepare for the trial.
During this break, Sameer learns that Hariya is a retired hangman and Joe is, in fact, Anna's brother. Scared, he tries to escape from the house, but Joe prevents that from happening. Sameer now realises he is completely trapped. As the trial starts, Lateef presents a video from Sameer's phone as evidence of his illicit relationship with Natasha, his late boss G.S. Oswal's wife and their conspiracy to kill him. Bhullar and Lateef passionately argue in the court & finally a guilty verdict is pronounced & given capital punishment. Now everyone insist Sameer to go upstairs with Hariya, presumably to be hanged to his death. Sameer mocks them saying that they are real criminals who hang people for their petty game. Lateef replies that entire trial has been recorded by CCTV, and that either way, he would be punished in this court or a real court. Fearing dear life, Sameer pulls out a gun & threatens everyone at gunpoint, takes the DVR of the CCTV and runs out of the house with everyone else in pursuit. Sameer manages to destroy the DVR, but in a hasty move, accidentally falls off the cliff to his death, thus serving poetic justice to his crime.
A few days later Natasha visits their place, telling them that she is here to collect Sameer's phone which is her company's property. The film ends with everyone convincing Natasha to play their game