Having witnessed the Jallianwala Bagh massacre in Amritsar in 1919, Udham Singh spends years preparing for revenge, seeking to hold Michael O'Dwyer-one of the individuals responsible for the atrocity-accountable.
After traveling through various countries, he arrives in London, England, where he assassinates O'Dwyer in 1940. Moving beyond the simple act of assassination, the film employs a non-linear narrative to trace Udham Singh's evolution into a revolutionary, 
While exploring the violence of colonial rule and the enduring memories and trauma left in the wake of the massacre.