The story follows a young rickshaw-puller in Bhopal who gets a menial job at a chemical plant, but in December of 1984 a chemical spill in India takes the lives of almost 15,000 people and injuring more than 100,000. The film follows how the industrial disaster in the city changes his life and those of others.

Uncertainty results in the life of Delhi-based Raj when his wealthy wife, Kiran, the sole heir to the Saxena Group of Companies, finds out that he may be having an affair with leggy model, Dolly, who is being stalked by her possessive ex-boyfriend, Diesel. Kiran hires a private detective, Nunnu, who secretly loves her, to follow Dolly and Raj around. To pull wool over their eyes, Raj recruits a former waiter, Goverdhan, to pose as Dolly's live-in boyfriend, while an embittered former employee, Mangu, prepares to blackmail Raj. Hilarious chaos results when Raj starts to suspect that Goverdhan and Dolly are having an affair.

Atithi Tum Kab Jaoge? is the story of Puneet and Munmun, a happily married couple living in Mumbai whose lives take an interesting turn when a distant relative, Chachaji turns up unannounced at their doorstep from a far off village. The guest overstays his welcome so much so that the exasperated couple come up with various ploys to hasten his departure to hilarious results.