In 1999, a teenage Zoya witnesses her father, ISI agent Rehan Nazar, die in a bomb blast. After his funeral, she is visited by Nazar's protege, Aatish Rehman, who convinces her to join the ISI.In the present, Avinash "Tiger" Singh Rathore is called for a mission by RAW chief Maithili Menon to rescue Tiger's former handler Gopi Arya, who was captured in Afghanistan after trying to extract information from the Taliban about a mission being planned in Pakistan. Following his rescue, Gopi reveals to Tiger that Zoya is involved in the planned mission and succumbs to his injuries. Tiger begins to spy on Zoya, and is later assigned to safeguard a RAW agent named Jibran Sheikh in St. Petersburg, Russia, who worked with Gopi and escaped to the country after being discovered in Pakistan. Tiger witnesses Zoya's attempt to assassinate Sheikh; after saving him, Tiger is captured by Aatish, who reveals that he enforced Zoya to assassinate Sheikh by near-fatally drugging and kidnapping her and Tiger's son Junior. In a flashback twelve years prior, It is revealed that Aatish sought to derail a peace treaty between India and Pakistan in Vienna by assassinating the Indian Army General. After refusing to cooperate with the plan, Zoya covertly informs Tiger. Aatish's pregnant wife Shaheen Baig, attempts the assassination, but was shot and killed by Tiger. Aatish denied that his agents knew of the plan and was subsequently imprisoned and ousted from the ISI.Tiger and Zoya recruit their team of RAW agents, to steal a briefcase for Aatish, containing missile launch codes in Istanbul in exchange for Junior. Aatish then has Tiger and Zoya framed as traitors by their respective countries, leading to Tiger's detention at an army prison in Northern Pakistan.Tiger is sentenced to death, but manages to escape with the help of Pathaan. Tiger travels to Islamabad where he meets his adopted son, Hassan, whom Tiger had rescued in a mission in Ikrit.[a] Tiger's team, Zoya and ISI agents Abrar and Javed return to Istanbul, where they learn that Aatish and Pakistani Army Chief of Army Staff General Imtiaz Haq are planning to assassinate Prime Minister of Pakistan Nasreen Irani in order for Aatish to replace her. Tiger, Zoya, and their team secretly enter the Pakistan's PMO and reveal the plan to Irani. Tiger and Zoya take Irani to an underground bunker and Tiger forces Haq to publicly reveal the plan.However, Aatish secretly kills Haq with the help of Javed, who is revealed to be Shaheen's brother and frames Tiger for killing Haq. Abrar and Karan are killed by Aatish and Javed, who locate Irani. Hassan sacrifices himself, allowing Tiger and Zoya to help Irani to escape. Zoya avenges Abrar and Karan's deaths by killing Javed. Tiger and Aatish engage in a combat, resulting in Tiger killing Aatish. Irani exposes Aatish's plot to the public and Tiger, Zoya and their team are proven innocent. Tiger contacts Maithili and assures her that he will always be there to serve his country.In a mid-credits scene, Colonel Sunil Luthra contacts Kabir Dhaliwal and assigns him to assassinate an unidentified person.