Mr. X

ACP Bhardwaaj blackmailed Raghu into killing the Chief Minister by threatening to kill Siya. Bhardwaaj had positioned a sniper near Siya, who was on duty elsewhere, and told Raghu that if he refused to kill the CM, the sniper would kill her. This forced Raghu to make an impossible choice between his duty and his love for Siya.

While Raghu pulled the trigger under duress, the real mastermind behind the CM's assassination was his own son Aditya. Aditya orchestrated his father's murder to seize power and become Chief Minister himself. Raghu was merely a pawn in Aditya and Bhardwaaj's conspiracy.

After being left for dead at the abandoned factory with severe burns, Raghu sought help from his friend Popo. Popo took him to a laboratory where Raghu's sister explained his dire prognosis involving radiation. Raghu consumed an experimental potion that triggered complete cell regeneration, making him invisible to all light except neon and direct sunlight, transforming him into Mr. X.

Siya only knew that Raghu had killed the Chief Minister, which appeared to be a betrayal of his duty and principles. She was unaware that he was coerced by Bhardwaaj under the threat of her own life. This misunderstanding, combined with Raghu's sudden disappearance after the factory attack, led her to believe he had betrayed her and abandoned her.

Bhardwaaj orchestrated the entire conspiracy to assassinate the Chief Minister and manipulate events to his advantage. He used Raghu as a disposable pawn to actually carry out the killing, while also helping Aditya take power. Once Raghu became a liability and potential witness, Bhardwaaj arranged for him to be killed at the factory, framing him for the murder and eliminating him to cover up the conspiracy.

The timeline states Raghu was left for dead after the brutal confrontation at the abandoned factory, but he miraculously survived despite suffering severe burns. The exact mechanism of his survival isn't detailed in the summary, but he later emerged transformed after receiving treatment at the laboratory with the experimental potion.

Raghu began his revenge spree with Tiwari because Tiwari was Bhardwaaj's key associate in the conspiracy against the Chief Minister. After consuming the potion that transformed him, Raghu confronted Tiwari during a drunken drive home, issuing him a chilling ultimatum that he would die within 24 hours. When Tiwari dismissed the warning, Raghu killed him, marking the first target in his vengeance campaign.

After learning from Bhardwaaj that Raghu had transformed into Mr. X and intended to kill Aditya, Bhardwaaj assigned Siya to protect Aditya. Siya was unaware of Aditya and Bhardwaaj's true roles in the conspiracy at this point. She was torn between her duty as a police officer and her personal feelings for Raghu, creating an internal conflict between her professional obligation to protect Aditya and her growing compassion for Raghu.

During the final confrontation with Bhardwaaj, Siya turned the tables by recording his incriminating confession on her phone. She then shared this confession publicly during a press event, exposing Bhardwaaj's involvement in the Chief Minister's assassination and his conspiracy to frame and kill Raghu. This evidence brought justice to the political conspiracy.

Raghu killed Aditya as part of his revenge mission against everyone involved in the conspiracy that destroyed his life. Aditya was a key figure in the plot, he orchestrated his own father's assassination to take power, then conspired with Bhardwaaj to frame Raghu for the murder and have him killed. Aditya represented both the political corruption and the personal betrayal that Raghu suffered.

Bhardwaaj wanted Raghu dead because Raghu was the only witness who could expose the conspiracy. Raghu knew that Bhardwaaj had forced him to kill the CM and was aware of Bhardwaaj's involvement with Aditya. Additionally, as Mr. X, Raghu was actively hunting down everyone involved in the conspiracy, making him an existential threat to Bhardwaaj's power and freedom.

After consuming the experimental potion, Raghu gained the ability to become almost invisible, but with specific limitations. He was invisible to all light sources except neon lights and direct sunlight. This meant he could still be seen under certain lighting conditions, which became both an advantage and a vulnerability in his revenge mission.