The movie is based on Indian Revolutionary Shaheed Sardar Udham Singh who is better known for the assassination of Michael O Dwyer in London, who was behind the Jallianwala Bagh Massacre.

A young Sardar Udham was left ... reaching London in1933-34. There, Udham spent the most decisive 6 years of his life, re-igniting the revolution. On 13th March, 1940, 21yrs since carrying the ...