Three friends Bhavesh [Shreyas Talpade], Parag [Javed Jaffrey] and Pariksheet [Aashish Chaudhary] live in Pattaya, as paying guests in a house owned by Kiska Miglani [Asrani]. Bhavesh works as a chef in a restaurant owned by Ballu Singh [Johnny Lever],called Namaste India. Ballu has a younger brother, Ronnie [Chunky Pandey] who wants the right to the restaurant, because he owes a considerable amount of money to a gangster,Murli [Inder Kumar]. Parag is a screen writer for a television channel. And Parikshit is a car salesman working under Aarti Gupta [Neha Dhupia],eventually all three of them lose their jobs.The three friends are later joined by Jayesh [Vatsal Seth] from Mumbai, who is a cousin of Parikshits, and tells them that an apartment is included if he gets a job at an architecture firm.After getting drunk,celebrating Jayeshs arrival, while they are insulting Kiska, who arrives back home unexpectedly, hears what they say and kicks them out. They go out in search of a place to stay, a friend of Parikshits suggests an address with a paying guest requirement. Parikshit and Jayesh go to the home to find its owner is Ballu Singh, to whom they are oblivious of the fact that he is Bhaveshs former employer.Ballu and his wife,Sweety [Delnaaz Paul], agree to let them stay on one condition: They must be married. Parag poses as Jayeshs wife, Kareena, and Bhavesh as Karishma, Parikshits wife. Jayesh gets the job and will get the allotment to the flat in fifteen days time. Ballu Singh and Sweety leave to pick up Sweetys sister, Kalpana [Celina Jaitley]. When the arrive home, Jayeshs girlfriend, Alpita [Riya Sen], arrives with them and sees the four friends having [what she believes] sex. She is instantly outraged at Jayesh and leaves him, meanwhile, Parag has gotten Seemas father to let him marry her,Bhavesh, while wooing Kalpana, finds himself in a situation where Ronnie tries to rape Karishma and in the process of saving Bhavesh, Jayesh nearly drowns him by accident. While discussing the event with Parag and Parikshit,he discovers the apple eaten has half a worm in it,Sweety hears Bhavesh vomit and mistakes him for pregnant. In the meanwhile,Parag has gotten Seemas father [Paintel] to let him marry her,Aarti has fallen for Parikshit, Kalpana has chosen Bhavesh as her life partner and Jayesh has reconciled with Alpita. The four friends decide that it is time for them to tell Ballu and Sweety the truth.While changing in the mall,in a glass elevator, an accomplice of Ronnies sees them and tells Ronnie about the event. When they come home, they find Ronnie, Ballu Singh and Sweety there, but they do not know that anyone except the villain is there. Ronnie has gotten Ballu to sign the papers giving Ronnie the right to the restaurant, Bhavesh snatches the papers away and they all end up in a theater showing of Mughal-e-Azam, where they all don various costumes and each make their own humorous attempt to snag the restaurant papers. Ballu gets back the restaurant and forgives them on one condition, they give them the dream of a small child in the house, which they gladly set out to do.

Box office

Paying guests had a weak start but the word spread and had packed theaters. The film was declared a semi hit.