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.

Based in Cape Town, specializing in divorces, Jeet Oberoi warns his friends, Karan Malhotra and Bhavesh Patel, about the many disadvantages of being involved in a married relationship. He indicates that marriages result in divorce, if it is a love marriage than the groom digs his grave; and if is an arranged marriage, it is the groom's family that dig his grave. Scoffing at this, Karan gets married with his sweetheart, Sanjana Jugran, much to the chagrin of her dad; while conservative Bhavesh travels to Vishwamitri, Gujarat, along with his entire family, and gets married to a liberal Prachi Jadeja. Incompatibility issues will soon surface, compelling the duo to retain Jeet as legal counsel to expedite their respective divorce proceedings.

Mumbai-based collegian-slackers Sid(Arshad Warsi), John(Ashish Chodhry) and Amit(Yash Tonk) do graduate after several years, are unable to find employment, and form a Punjabi Rock Band with the help of a gangster, Munnabhai(Ashish Vidhyarthi). When John's attempts to woo fellow-collegian, Natasha (Arti Chabria), go in vain, his buddies assist him in pursuing a beauty named Sheetal(Udita Goswami), and John falls head-over-heels in love with her. He introduces her to his wealthy father, Albert (Adi Irani), who would prefer that he take over their business - a toy factory - and upon being refused, asks him to leave. Sid and Amit soon find that Sheetal, an expert in martial-arts, is very possessive, does not approve of their lifestyle, and prevents John from seeing them. Watch what happens when John finds out that Sheetal has been abducted, believed to be dead, and the culprits are none other than Sid and Amit.