Movie Story : Haunted by the Jallianwala Bagh massacre, a young Udham Singh flees to the mountains of Afghanistan and eventually makes his way to London in the early 1930s. Carrying the wound of that day for more than two decades, he plans revenge against Michael O'Dwyer, the official who ran Punjab in April 1919. On 13 March 1940, he carries out the assassination to avenge the lives lost at Jallianwala Bagh.