• Producer : Ronnie Lahiri , Sheel Kumar
• Director : Shoojit Sircar
• Screenwriter- screenplay : Shubhendu Bhattacharya , Ritesh Shah
• Dialog Writer : Ritesh Shah
• Composer : Shantanu Moitra
• Lyricist : Shubhendu Bhattacharya
• Actor : Vicky Kaushal
• Actress : Banita Sandhu

The film goes back and forth from the present, where Udham is in London, to his past when he was part of the Hindustan Socialist Republican Association (HSRA) and explores his reasons for assassinating Indian Civil Service officer Michael O'Dwyer. Udham Singh (known as Sher Singh) is released from prison in Punjab in British India. He is constantly being watched by the colonial authorities. He leaves India and goes to USSR during what appears to be winter. From there he makes his way to London by ship. Even though the British authorities are on the lookout for him, he successfully evades them and lives in London, making a living as a salesman and then a welder. He is shown in front of Caxton Hall, making his way inside where O'Dwyer is giving a speech on his time as Lt. Governor of Punjab and how he had suppressed a major uprising. Udham makes his way to O'Dwyer and shoots him, and is arrested. Udham Singh is appointed a lawyer who slowly gets Udham to tell his backstory. Udham is brought to court and in spite of a good lawyer, the judges sentence him to death. Upon hearing this, Udham makes an impromptu speech where he denounces British rule in India and reaffirms his support for the Indian freedom movement, Udham protests the conditions of his detention and goes on a 42-day fast, but is force-fed to break it. He slowly opens up to the investigating inspector and tells him the reasons for the assassination. Udham Singh also got the title of Shaheed-E-Azam., In 1919, Udham is a young adult working in a textile mill near Amritsar, with a girlfriend who is mute. On 13th April, 1919, General Dyer on order from O'Dwyer opens fire on a crowd of 20,000 peaceful protestors inside Jallianwala Bagh. Udham is sleeping unaware of the massacre, until his friend wakes him up, mortally wounded and bleeding profusely. He hears about the massacre and rushes to the grounds to help. It is shown that along with a few other volunteers, Udham finds survivors and gets them to a makeshift hospital which is overwhelmed itself. He is executed and shown to have a photo of Bhagat Singh, taken when Bhagat Singh was in jail during his final days., After the Independence of India, Udham Singh's ashes are brought to India upon the request of Punjab Chief Minister Giani Zail Singh and were immersed in Sutlej river. His ashes were immersed where his idol Bhagat Singh's ashes were immersed. There is a statue made outside Jallainwala Bagh to honour Udham Singh and his courageous work., In the final scene, Gen. Dyer and O'Dwyer give their own accounts to the Hunter Commission.

HINDI PARTLY ENGLISH

• Track 1 : Time To Meet My Friend ( माझ्या मित्राला भेटण्याची वेळ )
• Track 2 : Sardar Udham Theme ( सरदार उधम थीम )
• Track 3 : Crush The Rebels ( बंडखोरांना चिरडून टाका )
• Track 4 : You Are Not Coming Back ( यू आर नॉट कमिंग बॅक )
• Track 5 : I Was Late ( मला उशीर झाला )
• Track 6 : Koi Zinda Hai ( कोई जिंदा है )