Lighthearted gangster Munna Bhai (Sanjay Dutt) and his partner in crime, Circuit (Arshad Warsi), are back in action, and this time, their adventures lead Munna straight down lover's lane. He's fallen for Jhanvi (Vidya Balan), a radio DJ. To capture her attention, Munna vows to win her station's contest, which tests the participants' knowledge about Mahatma Gandhi. But intellectualism isn't Munna's strong suit. So how will he win Jhanvi's hand?