Udham Singh Kamboj was born and brought up in a Sikh family in Punjab, British India. Enraged over Jallianwala Bagh massacre that took place in Amritsar in April 1919 during the day of Baisakhi festival, Singh swears vengeance. He sets about creating obstacles for the British colonial government, and is soon on wanted lists by the authorities. On one occasion he is shielded by a courtesan, Noor Jehan (Juhi Chawla). In order to achieve his vengeance, he travels to the United Kingdom, befriends some local Indians, as well as Irish nationalist, Irene Rose Palmer (Charleen Carswell). He kills Michael O'Dwyer (Dave Anderson), the Lieutenant Governor of Punjab, who in 1919, who had authorised Dyer's use of force, during a program at Caxton Hall in London. He is quickly apprehended, and jailed. He refuses to cooperate with the authorities, nor is he willing to accept that he is mentally incapable. During his trial, he is offered the opportunity to state his case for acquittal but his remarks were deemed incendiary by the judge, who forbade the press from publishing them. He was hanged on 31 July 1940 at Pentonville Prison in north London.
