DCP Kabir Malik and his senior officer Joint CP Vikram Bakshi go on to investigate a series of bomb blasts in Delhi during the Delhi Police Raising Day. The serial blasts were committed by Zarar, an Indian Mujahideen (IM) terrorist, who is living under a fake identity as Haider. Vikram and Kabir stop some of the five serial blasts and are asked to collaborate with Vikram's classmate Tara Shetty, ATS Chief of Gujarat. They track down a suspect called Shadab, through sketches and witness accounts, and also learn about his hideout through an undercover officer.
Later, Kabir and Vikram decide to follow their lead without consulting Tara. However, their operation leads to an intense encounter between the agents and Zarar’s associates. Zarar takes a kid as a hostage after most of his associates are killed and Shadab is arrested; he shoots Vikram twice. Vikram succumbs to his injuries and dies. Kabir faces internal conflict with Tara and gets removed from the case. After a series of bombings in Jaipur, Kabir collaborates to investigate and his relentless pursuit leads him to suspect Zarar, who is in Darbhanga and is planning major attacks with new accomplices and financial support.
Zarar and his team prepare for the bombings, but Kabir and Tara, following some leads, manage to thwart some attacks and arrest members of Zarar’s team. However, Zarar manages to escape again and Kabir tracks Zarar to Darbhanga. Meanwhile, after the Jaipur attacks Zarar marries Nafisa, whose father was also part of Zarar's team though Nafisa and her family had no idea about the same. Later Kabir reveals Zarar's true identity to Nafeesa. She faints after knowing this as she is pregnant with Zarar's child and is taken to hospital. Zarar contacts her in the Hospital and convinces her to come to him and she agrees, but on the news, she hears that Zarar's parents are alive about which Zarar lied to her. She reveals to Kabir and his team that Zarar will pick up her in Bangladesh via train. Zarar leaves for Bangladesh and Kabir learns about his exact location through Nafisa. Kabir and Rana head for Bangladesh and meet up with Jagtap, Vikram and Tara's friend from the academy and a RAW agent.
Kabir, Rana, and Jagtap ambush Zarar and his men at the station as Zarar was waiting for Nafeesa to arrive. Jagtap also spots Rafeeq and tries to capture him, but to no avail. After a brief chase through the streets by Kabir, Zarar is captured and taken to a safe house at the India-Bangladesh border before being transported back to Delhi. Tara reunites with Kabir and Jagtap, deciding to leave for the mission of capturing IM's leader and their team, including Rafeeq, who was spotted in Kathmandu.
