Lakhan Singh (Sonu Sood) is the "king" of the Australian underworld, accompanied by his associates (played by Javed Jaffrey,Neha Dhupia, Manoj Pahwa, Yashpal Sharma,Kamal Chopra and Sudhanshu Pande). Far away in a small village in Punjab where Lucky was born there is someone more notorious than him - Happy Singh (Akshay Kumar). The village is fed up of his magnanimity which has resulted in a number of hillariously disastrous situations. Out of desperation they decide to send him on a long trip to bring the gangster Lucky back to Punjab as his despicable deeds were maligning the community's image in Australia.
Happy takes this mission quite seriously and embarks on his journey accompanied by his friend Rangeela (Om Puri). The high point of his journey is when he meets Sonia (Katrina Kaif) whom he starts loving but upon reaching his destination things take a precarious turn when a series of comic misadventures run him out of any money. He is fortunate to find warmth and affection in a elderly lady (Kirron Kher) who helps him meet Lucky. In a strange turn of events Lucky is saved from a life threatening attack by Happy risking his own life. Inspite of this, Lucky is paralyzed and Happy becomes the new 'King'. The series of chaos, shocks and misunderstandings result in a laugh riot.
Akshay Kumar as Happy Singh
Katrina Kaif as Sonia
Ranvir Shorey as Puneet
Javed Jaffrey as Mika Singh & Puneet's Father
Kiron Kher as Rose Lady
Neha Dhupia as Julie
Kamal Chopra as Guruji
Yashpal Sharma (actor) as Pankaj Udaas
Om Puri as Rangeela
Kirsten Parent as herself
Sonu Sood as Lucky Singh
Eli Bernstein as Disco Dancer
Peter Coates as the pilot
James Foster as another pilot
Sudhanshu Pandey as Raftaar.
Ashish Singhal (cameo appearence)
Resolution...................: 640 x 304
Subtittles...................: English hard coded