Munna (sanjay Dutt) is in love with the voice of popular Radio Jockey Jhanvi (Vidya Balan).

Life is beautiful for Munna - his dadagri' business is flourishing, he listens besottedly to the radio for hours every day, he dreams of marrying Jhanvi...

There is just one 'minor' problem.
Jhanvi thinks Munna is a Professor of History.

Poor Munna!
As he tries to sort out this 'minor' entanglement, the most unusual thing occurs...

What happens when the Present meets the Past?
What happens when a slap on the face is greeted with turning the other cheek?

Producer Vidhu Vinod Chopra, Director Rajkumar Hirani and actors Sanjay Dutt, Arshad Warsi, Vidya Balan and Boman Irani come together to bring you a hilarious, heart-warming story about the triumph of simple values like love, compassion and honesty in today's fast-paced world.

'Lage Raho Munnabhai' is a film that will make you laugh with tears, cry with joy and touch your heart forever.