Ghaath is a jouey of an ordinary man, a man with a vision and mission. But his aspirtions go haywire in the nist of diabolic games played by both cops and politicians. Krishna Patil (Manoj Bajpai) is the lower middle class protagonist, whose father Ramakant Patil(Anupam Kher)is an idealist. Krishna's sister Mansi (Sheeba) gets betrothed to scribe Divakar (Arshad Warsi). Krishna, who is rearing to join the police force, gets into an altercation with the local goons and cops and as a consequence invites trouble for himself. He becomes a niusence for tehcorrupt cop Godbole (Mukesh Tiwari), and power broker Mamu (Irfan Khan). Krishna however surmounts all the hurdles and emerges trumps from the police training with the blessings of a senior inspector Ajay Pandey (Om Puri), but he is rejected due to interference from the higher ups, Kavita Choudhary (Tabu)a advocate meets him during the training and na attachment develops between them. But there is a shock for Krishna - his sister Mansi and her husband Divakar are exterminated. Krishna swears vengeance against Mamu. Pandey stops him. But there are other stoo, like social worker Tinnu Anand, Deputy Municipal Commissioner Sachin Khedekar etc. waiting to unleash their fury on mamu. But Krishna is the one who accomplishes his mission and... HE IS WAITING TO KILL!