Do Knot Disturb is a comedy movie which is based on a rich businessman who wants to hide his extra marital affair with a supermodel. He bribes a waiter into pretending to be the model's boyfriend. Mistaken identities and misunderstandings follow which are sure to take the viewers on a hilarious ride. Govinda: The Husband He lives on his wife's money and moves to her beats. She provides everything from his meals to his clothes. Suffocated and looking for a way out, he is having an affair... Sushmita Sen: The Wife She is sophisticated and sexy. She is a generous and loving wife. She is more successful than her husband, she owns the company, the house and controls the purse strings... and she also suspects that her husband is up to something... Lara Dutta: The Mistress She is hot enough to burn. But she is also ditzy and naive. She believes that her lover will leave his wife to marry her... Ritesh Deshmukh: The Pretend Boyfriend He is the man caught in the middle, who is in desperate need of money for the treatment of his sick mother. The husband promises to pay him a large some of money if he pretends to be the boyfriend of the mistress... so that the suspicious wife is thrown off the scent... Sohail Khan: The Actual Ex-Boyfriend He is the ex-boyfriend of the mistress who was dumped for the married man. He is genuinely in love with her, although he does have an anger management problem. Ranvir Shorey: The Private Detective He is the childhood friend of the sexy, rich wife. And he has always been in love with her. When she comes to him with her suspicions about her cheating husband, he is hell bent on getting proof of the infidelity, so that he can marry his childhood sweetheart himself!