Maximum revolves around two of Mumbai Police's top encounter specialists and their fight for control. This fight goes through a maze of politics, land deals, fake encounters and bad money. Pundit (Sonu Sood) and Inamdar (Naseeruddin Shah) try to overtake each other for power. Each kill the other's informers and divides the Mumbai police. Inamdar and his superiors frame Pundit and he gets suspended. Pundit comes back into the force with the help of a minister, Tiwari (Vinay Pathak). After the Mumbai bombing Inamdar is removed from his position and Pundit is reinstated. Meanwhile, Tiwari takes responsibility for the elections. One night when he is at home his accomplices are shot. He goes to check and finds the culprit to be Pundit. Pundit shoots Pathak.
In flashback it is shown that while Pundit is travelling with his wife, Supriya (Neha Dhupia) shots are fired. In the confusion his car falls into a jungle. After that he shoots all the people and says that they were Niranjan's people. But when he comes back he realises that his wife is no more. Then it is revealed that Tiwari had an offer from the Home Ministry and 700 million from Pundit's enemies in exchange for killing Pundit. Instead, his men killed Pundit's wife. That was the reason Pundit shot Tiwari.
Before dying Tiwari confesses that he should not have done what he did. Pundit asks whether Subodh(his superior) knew of this. Finally Pundit shoots Tiwari.
Pundit hands over property documents to a reporter. The reporter tells him that there is no going back once this goes public. Pundit says that he does not want to return. Pundit comes with his daughter and the reporter to leave the city. Meanwhile, Inamdar and his men start shooting at them. Many people from both sides are killed. Meanwhile, the train is about to start. Pundit sends his daughter with his brother and the reporter to catch the train. She is unwilling to leave without him but finally does. An open shootout follows in which both Pundit and Inamdar are shot. A severely injured Pundit runs towards the train to meet his daughter. Before he can do so he is shot by Inamdar. Before dying he manages to shoot Inamdar. Pundit has a last look at his daughter before finally dropping dead
