Jai [Salman Khan], an upright common man, is fighting a solitary war against corruption and injustice. Honest and incorruptible, he has made it his mission to help as many people as he can. His mantra is quite simple -- help somebody and then request that person to lend a helping hand to somebody else -- thus forming an ever-growing circle of people helping each other.

In a strange twist of fate, he finds himself pitted against a powerful politician [Danny Denzongpa] and his vile family. Jai, who is an ex-army officer, will not shy away from a battle, however bloody it may get and firmly believes that you do not have to wear a uniform to serve your country. As the politician unleashes his violent goons on braveheart Jai, Geeta [Tabu], Jai's sister, realises the horrific consequences this can have on her brother and the rest of their family.

She persuades a reluctant Jai to make peace with the politician. But when this leads to humiliation being heaped on him, Jai loses his cool and declares all out war. It is an unequal war -- on side side is the politician with his numerous henchmen and on the other side is Jai -- all alone. However, unknown to Jai, a silent revolution has already begun. The voiceless public, he has helped in the past, is gathering force. It finally has a voice and this voice cannot and will not be silenced.