Muthu Pandi, a village strongman, decides to marry his niece Dhanalakshmi, and begins his quest by eliminating everyone who opposes their union - starting with both her brothers. In desperation, Dhanalakshmi decides to escape from the village, and in the process is unwittingly assisted by a university Kabaddi player Velu.

Mumbai-based collegian-slackers Sid(Arshad Warsi), John(Ashish Chodhry) and Amit(Yash Tonk) do graduate after several years, are unable to find employment, and form a Punjabi Rock Band with the help of a gangster, Munnabhai(Ashish Vidhyarthi). When John's attempts to woo fellow-collegian, Natasha (Arti Chabria), go in vain, his buddies assist him in pursuing a beauty named Sheetal(Udita Goswami), and John falls head-over-heels in love with her. He introduces her to his wealthy father, Albert (Adi Irani), who would prefer that he take over their business - a toy factory - and upon being refused, asks him to leave. Sid and Amit soon find that Sheetal, an expert in martial-arts, is very possessive, does not approve of their lifestyle, and prevents John from seeing them. Watch what happens when John finds out that Sheetal has been abducted, believed to be dead, and the culprits are none other than Sid and Amit.

Dheerendra Singh is a kick-boxer, who after beating Gajanan Dinan, has been selected to represent India in the 14th Annual Kick-boxing tournament in Kuala Lumpur where he will be pitted against Pakistan's Noor Mohammad. He is engaged to Neela Chaudhary, and lives with his widowed mother, and a cricketer brother, Veerender. The family witness Dheerendra excel himself during his bout against Noor but ends up gravely injured, and subsequently passes away after a kick in the neck area. When the Malaysian Government rules it as an accident, an enraged Dheerendra opts out of cricket, joins the kick-boxing team, and travels to Lahore (a city that was founded by Vishnu Avatar Ramji's son, Lav) to participate in the Quid-E-Azam Tournament where he hopes to avenge his brother's untimely death but is not aware of the outcome of his quest as well as the surprises that await him there.

The story revolves around the central edifice in this movie, a 100 year old Dam built by British during their colonial days in India . Like a Dam, each character in this movie, holds back their emotions for various reasons, eventually the DAM breaks along with that of its characters drawing the audience to gripping climax. The numerical 999 has got great importance in British Colonial Indian historical pages. The story reveals the concealed truth of India's age old myths and science.