Oxygen (2017) Timeline Explained – Every Event in Order

Sanjeev infiltrates Raghupati's family as Krishna Prasad to investigate Tiger Brand, which is owned by Raghupati's brothers and responsible for his brother's death. Marrying Shruti gives him access to the family to gather evidence about the opium-laced cigar operation while protecting her from the escalating danger.

Foreshadowing: His quiet, cultivated demeanor when meeting Shruti hides his true identity as Major Sanjeev.

• sanjeev
• krishna prasad
• undercover
• shruti
• infiltration

The investigation reveals that Raghupati's brothers are the true owners of Tiger Brand, the company manufacturing cigars laced with opium. This discovery connects the corporate conspiracy to Sanjeev's family tragedy, as his brother Ajay died from lung cancer caused by smoking these tainted cigars.

Foreshadowing: The early investigation hints at a larger criminal operation beyond simple tobacco-related illness.

• tiger brand
• raghupati
• brothers
• opium cigars
• conspiracy

Geetha leaks a gas cylinder explosion to eliminate the killers who were threatening Sanjeev and his family. She sacrifices herself to conceal their tracks and prevent the assassins from completing their mission, though the killers ultimately survive and escape.

Foreshadowing: Her earlier role as a microbiologist assisting Sanjeev foreshadows her willingness to take extreme measures.

• geetha
• sacrifice
• explosion
• death
• mission oxygen

During Veerabhadram's attack on the household, Mahendra confronts the threat. Sanjeev (as Krishna) decapitates Mahendra and works with the attackers to eliminate others threatening the family. This brutal act reveals Sanjeev's darker capabilities as he eliminates anyone who stands in the way of his mission, even members of his cover family.

Foreshadowing: Krishna's protective stance earlier masks this violent capability revealed only under extreme threat.

• mahendra
• sanjeev
• death
• decapitation
• attack

After learning the truth about Sanjeev's real identity and the conspiracy behind Tiger Brand, Shruti decides to cooperate with him. She helps recover the cigar formula and assists in exposing the criminals, motivated by the revelation that Raghupati's family was involved in the opium scheme that harmed many, including Sanjeev's family.

Foreshadowing: Her initial softening toward Krishna after he protects the family sets the stage for her eventual cooperation.

• shruti
• sanjeev
• switch sides
• help
• cigar formula

The cigar formula is the secret recipe proving Tiger Brand deliberately mixes heavy doses of opium into their cigars. Sanjeev and Shruti recover it from the factory vault to expose the criminal operation. Raghupati reveals he is the actual creator of the formula, which can be accessed through live broadcasts, making it the ultimate evidence against the conspirators.

Foreshadowing: Mission Oxygen was launched specifically to destroy this formula and cut off the opium supply.

• cigar formula
• tiger brand
• opium
• evidence
• mission oxygen

Raghupati collapses from a stroke when the truth about the cigar formula and its holders comes to light. The revelation that his brothers owned Tiger Brand, combined with the exposure of the opium conspiracy and his own role as the formula's creator, proves too much for him physically and emotionally.

Foreshadowing: His earlier clinical decision to arrange Shruti's marriage masks the guilt he carries over the family's involvement.

• raghupati
• stroke
• collapse
• formula
• truth

Sanjeev survives the factory explosion through a dramatic twist. After being shot by Raghupati and jumping into the fire with him to destroy the factory, Sanjeev manages to escape. The police initially declare him dead to close the case, but he resurfaces alive in Bombay, where a CBI officer promises support whenever needed.

Foreshadowing: His final cry about quitting smoking as the ultimate weapon hints at his continued purpose.

• sanjeev
• survives
• explosion
• fire
• bombay

Mission Oxygen is Sanjeev's operation to destroy Tiger Brand and cut off the supply of opium-laced cigars. Launched after discovering the connection between his brother's death and the tainted cigars, the mission aims to dismantle the criminal operation and expose the conspirators responsible for his family's murder.

Foreshadowing: Ajay's suicide from smoking-related lung cancer directly triggers this investigative mission.

• mission oxygen
• tiger brand
• opium
• cigars
• destroy

Sanjeev jumps into the fire with Raghupati to destroy the factory and the evidence of the opium conspiracy. In the climactic moment, Raghupati reveals he is the mastermind behind the formula. Sanjeev chooses this sacrificial act to ensure the conspiracy ends and to deliver the moral message about the dangers of smoking, shouting 'No Smoking for the last time' as the ultimate weapon.

Foreshadowing: His earlier proclamation that the mind stores the secret through live broadcasts connects to this final broadcast of truth.

• sanjeev
• raghupati
• fire
• jump
• sacrifice
• no smoking