Rustom is a fictionalised account of those three bullets that shook the nation in the fifties. Cdr. Rustom Pavri(Akshay Kumar) returns home early from his voyage, only to find his find Cynthia(Ileana D’Cruz) is not at home and she has been out from the previous day. Feeling suspicious, he checks her belongings to find she is having an affair with their common friend, Vikram Makhija(Arjan Bajwa).
After confronting his wife, he goes to the Naval armoury, borrows a gun and goes to Vikram’s house to shoot him. Later, he himself surrenders to the police, who are shell-shocked as the rest of the nation.
Vikram’s socialite sister Preeti(Esha Gupta) wants the man to be punished at all costs, while a Parsi press owner(Kumud Mishra) plays the Parsi card to gain support him. Rustom himself plays his decorated Navy credentials to show he is more of a patriot than a killer, as he later tells the court he is not guilty. So what is Rustom. A true patriot .Or a cold-blooded murderer. The rest of the film answers that for you.