All the Best: Fun Begins

A wannabe car expert Prem Chopra (Ajay Devgn) with his beautiful wife Jhanvi (Bipasha Basu) running his ancestral gym, a claiming-to-be-married upcoming rock band singer Veer Kapoor (Fardeen Khan) who's living on his brother's pocket money and Veer's ravishing girlfriend Vidya (Mugdha Godse). Just when everything is going great guns in their lives, enters the upcoming singer's millionaire step brother Dharam Kapoor (Sanjay Dutt) bringing with him stumbling madness and generating hilariously awkward situations in just everyone's life around.

Life becomes challenging for Veer and Prem when Veer's brother Dharam pays an unexpected visit to Veer's place. In order to have his allowance increased, young bachelor Veer had written to his pocket-money-sourced brother that he is married. Time does not give an opportunity and Dharam's unpredicted stopover creates inescapable circumstances where Prem's wife Jhanvi is mistaken for Veer's wife and Veer's girlfriend for Prem's wife. Apparently Veer is also qualified to be in the hate list of Vidya's father. Veer and Prem start juggling between the prolonging debt payment to a local don and appeasing Dharam about their false marital status. The outcome results into rib-tickling humorous state where Veer and Prem handle the multiple vague characters arriving unexpectedly at their place and dealing with acquaintances where they proudly swank and cover up everything with lies, lies and more lies.