Indian Air Force helicopter pilots, Squadron Leader Vikram Rathore [Sanjay Dutt] and Flight Lieutenant Shezad Khan [Suniel Shetty], are busy with the process of passing time in the white-clad wilderness of endless non-populated arid lands. Suddenly, they spot a number of bodies strewn over and a hand reaching out.

The rescue is carried out despite a 'No-Go' from the HQ Command because of bad weather. The basic first-aid is carried out and a diary is discovered.

What unfolds through the pages of this diary, while these two pilots fight bad weather and the need to keep the rescued BSF soldier alive, takes them on a whirlwind trip across the nation with Sepoy Tarun Chauhan [Bobby Deol], his journey of life, his love Lachchi [Tanishaa], his battles, his fears, the loss of innocence, and above all, the influence of his mentor, Havaldar Mohammed Ali [Ajay Devgan], who is shaping his destiny.

From time immemorial, soldiers have fallen on the battlefield without really knowing why they were fighting, and for what. Absurdly, wars are always fought in the name of peace.

The protagonists of TANGO CHARLIE represent these brave fighters who are ready to sacrifice their lives for the sake of our safety and security without any expectation of any award or reward.