Vishwaroopam is a 2013 Tamil spy thriller film written, directed and co-produced by Kamal Haasan who also enacts the lead role. The film has Pooja Kumar, Rahul Bose, Andrea Jeremiah and Jaideep Ahlawat in supporting roles. Produced simultaneously in Hindi as Vishwaroop, the film features soundtrack composed by Shankar-Ehsaan-Loy, with lyrics by Vairamuthu and Haasan himself.
An Afghani Al-Qaeda Jihadi Omar (Rahul Bose), his accomplice Salim (Jaideep Ahlawat) and their international terror network, plots to attack New York with a "Cesium-bomb". Vishwanath alias Wiz (Kamal Haasan) is a Kathak teacher who lives with his wife Nirupama (Pooja Kumar), a nuclear oncologist, in New York. Nirupama confides with a psychologist that it’s a marriage of convenience that provided her a safe haven for pursuing her Ph.D in the U.S.A. The age gap between them notwithstanding, she is put off by Vishwanaths effeminate traits and is attracted to her boss, Deepak (Samrat Chakrabarti). Doubting whether her husband has secrets of his own, she hires a private investigator to trail him. She learns from the private investigator that Vishwanath is not a Hindu but a Muslim. In a sudden turn of events, the investigator gets killed by Farukh, a prominent member of the terrorist outfit led by Omar. A business card on his wallet gives away Nirupama and the terror group led by Farukh nabs the couple. The outfit operates from a warehouse on the outskirts of the city where the couple is being interrogated. It is revealed that Deepak was ensuring funds for the jihadi sleeper cell. Vishwanath is involved in a fight with the terrorists, kills Farukh and his men at the warehouse and escapes with Nirupama.
Omar and Vishwanath have a past, one that takes the story back by almost a decade, to the Al-Qaeda training camps in Afghanistan. Vishwanath alias Wisam Ahmad Kashmiri was one of the trainers in the Al-Qadea terror camps across the Durand Line. It also showcases Inter-Services Intelligence support to the terror groups. Wisam is shown as a jihadi in Kashmir, wanted by the Indian Army, who fled to Waziristan. What follows is a maze of events that go back and forth in time, unraveling a plot where in the terrorists are accumulating cesium from oncology devices to trigger a blast in New York. Nirupama is stunned to discover the true identity of her husband Vishwanath, his uncle (Shekhar Kapur), American accomplice Dawkins (Miles Anderson) and the young dancer Ashmita (Andrea Jeremiah) at her husband’s dance school.
Vishwanath is revealed to be Wisam Ahmad Kashmiri, an Indian Muslim RAW agent. His mission is to bust the sleeper-cell of the Jihadis in the United States of America, which is planning to divert the attention through "capsules" capable of emitting mild nuclear radiation tied to pigeons in New York city while enabling Abbasi, a Nigerian suicide bomber...