Tiger, played by Salman Khan is a RAW agent and India’s top spy. He is assigned a mission in Northern Iraq, to kill a man who is a traitor and joined the Pakistan’s spy Agency ISI. Tiger ends up slautering many Pakistani spies in the bargain to escape from Iraq. He finally reaches India and reports to his boss Shenoy who is at New Delhi. He is later sent to Dublin to spy on an Indian scientist who is suspected of sending important information to Pakistan. RAW agent Gopi, played by Ranvir Shorey, joins him. Tiger tries to meet the scientist but gets attracted to his caretaker Zoya, played by Katrina Kaif and tries to befriend her to get more information, but ends up getting robbed.
Tiger begins to have feelings for Zoya and they go on a date but later he learns that she is an ISI agent like him on a mission and in stead of killing her, he lets her go. After a few years they meet in Istanbul again and decide to run off together and tell their agencies they are out to arrest each other. They escape from everyone and their agencies telling them they would return only when RAW and ISI is no longer needed by the two countries. The movie is directed by Kabir Khan and produced by Aditya Chopra. The music is composed by Sohail Sen and Sajid-Wajid.