Kajol plays a dual role of twin sisters Sonia and Naina, in this crime thriller. Sonia gets raped and brutally killed by the antagonist Gokul. Enraged, Naina sets out to avenge her sister''s death, where she meets blind, retired Major Suraj Singh Rathod, who trains her to plan her revenge. However, the two get into an argument and Naina decides to go on the mission alone. Will she be successful?