"No Entry" follows the lives of three men Kishen (Anil Kapoor), 'the married man", Sunny, 'the bachelor' and Prem (Salman Khan) 'the married bachelor'! Ironically, while the faithful Kishen has a very suspicious wife, Kaajal (Lara Dutta), playboy Prem has a trusting wife, Pooja (Esha Deol) whilst Sunny's fiancee Sanjana (Celina Jaitly) is a bit of both! Trouble brews when Prem decides to make Kishen taste the forbidden fruit that comes in the form of sultry siren Bobby, who walks into their lives, leading to chaos, craziness, commotion and crisis. Who is this Bobby? Each one has a different answer to this question and it is not helped by the attentions of the politician P. K. Gupta (Boman Irani) who is hell bent on creating more trouble for them all.