The story takes birth in Locarno (Switzerland). Mohan Agashe as a high ranking Indian diplomat is kidnapped along with his daughter Kinjal (Dippanita Sharma) while holidaying in Switzerland. And this is the work of mastermind criminal Ansari (Milind Gunaji). Planning a conspiracy of international dimension, Ansari hires the Mabros Mercenaries (Shawar Ali and gang) to kidnap the diplomat and his daughter. They are kept under siege at the Brissago Islands.

What Ansari has in mind is to exchange the diplomat for the international terrorist group Al-Hamas led by Yuzan (Mukesh Rishi). From here, the movie gets more and more interesting and at the same time, complicating. Ansari must pay $50 million to the Mabros Mercenaries in order to obtain Yuzan. The Mabros Mercenaries are unaware of the entire situation. The story weaves more and more webs as this information is mistakenly passed on to the army head quarters. The army then takes a decision of sending Captain Aadit Arya on an undercover mission (code named Asambhav) to Switzerland to investigate the situation and to bring the diplomat back safely. Meanwhile, Ansari takes the help of Sam Hans (Naseeruddin Shah) and Brian (Tom Alter) to pay $50 million to the Mabros Mercenaries. The duo in turn ask Dabral (Asif Zakaria) and his brother to con pop singer Alisha (Priyanka Chopra) and get her involved in the plan.

Captain Aadit Arya (Arjun Rampal) works for the Indian Army. He is asked to carry out the undercover operation called mission Asambhav which he should complete within 75 hours.This operation takes Aadit to Switzerland. His job is to rescue the captives and bring them back safely to India.Meanwhile, Ansari seeks the help of a millionaire business man, Sam Hans (Naseeruddin Shah).

Can captain Aditya pull off this mission? Or is it an impossible task? Asambhav (meaning the possible) has the answers.

Asambhav is the first Hindi film to be shot entirely on location in Switzerland. It is also the first Indian movie to have the longest shooting schedule abroad lasting over two months.

Music of 'Asambhav' has two aspects to it - Low on substance but high on technical note!! If heard in isolation just as songs, there is not much for a music lover except for those who may appreciate the technical nuances of sound bytes.