24 (2016) Timeline Explained – Every Event in Order

Sethuraman sacrifices himself because he knows his twin brother Athreya will not stop hunting Manikandan until he gets the Project 24 watch. To buy time and ensure his son's escape, he tricks Athreya into believing he is carrying a bomb, forcing a violent confrontation on the train. Athreya kills Sethuraman and jumps off the moving train, but the distraction allows Manikandan to slip away with the locked box containing the time-travel device.

Foreshadowing: Sethuraman's earlier calm completion of Project 24 is abruptly shattered, hinting that the breakthrough will cost more than he expects.

• sethuraman
• athreya
• train
• sacrifice
• bomb
• project 24

Athreya impersonates Sethuraman because the Project 24 watch can only jump back 24 hours, which is useless for his goal of reclaiming his lost youth and physical abilities. He needs Manikandan, a skilled watchmaker, to upgrade the device, but Manikandan would never help the man who killed his parents. By pretending to be Sethuraman, a terminally ill father, Athreya manipulates Manikandan into willingly enhancing the watch's capabilities.

Foreshadowing: The moment Athreya awakens paralyzed and obsessed, his desperation is shown overriding any moral boundary.

• athreya
• impersonation
• sethuraman
• watch
• upgrade
• manipulation

The Project 24 watch was originally built by Sethuraman with a 24-hour time-jump limitation as a deliberate safety feature to prevent dangerous misuse of the technology. When Athreya steals the watch and tries to reverse 26 years to reclaim his youth, the device can only take him back to the night before Manikandan attacked him. This built-in limitation is exactly what forces Athreya to seek out Manikandan's help rather than simply rewriting history on his own.

Foreshadowing: Sethuraman's identity as a cautious scientist suggests he would never build an unrestricted time machine.

• project 24
• watch
• time travel
• 24 hours
• upgrade
• safety

When Manikandan activates the watch to warn his parents in 1990, Athreya clings to the device at the last moment and is transported alongside him. Because the time-travel process matches the traveler to the era they arrive in, Manikandan manifests as his infant self from that period while Athreya arrives as a fully grown adult. This transformation strips Manikandan of his ability to speak and warn anyone directly, leaving the watch in his crib as the only evidence of his return.

Foreshadowing: Athreya's obsessive grip on the watch throughout the film foreshadows his attempt to seize it during Manikandan's jump.

• manikandan
• athreya
• 1990
• infant
• time travel
• crib

Manikandan uncovers the truth while upgrading the watch because the process requires him to study its original construction and embedded history, which reveals fingerprints and design anomalies linked to Athreya rather than Sethuraman. He also pieces together inconsistencies in the man's illness story and emotional behavior, eventually recognizing that the "father" he is helping is actually his parents' killer. This realization drives him to trick Athreya into revealing the exact date of his parents' deaths so he can travel back and warn them.

Foreshadowing: The replica watch scene already showed Manikandan's instincts sharp enough to question suspicious offers.

• manikandan
• athreya
• identity
• upgrade
• watch
• discovery

The key was originally taken by Athreya during the 1990 attack when he failed to locate the watch itself, leaving him with only the means to open its hiding place. After Athreya falls off the train and slips into a 26-year coma, the key's whereabouts remain unknown until a twist of fate brings it into Manikandan's possession in 2016. This chance reunion finally allows Manikandan to open the locked box and discover the time-travel watch he unknowingly grew up near.

Foreshadowing: Athreya grabbing the key while Sethuraman escapes with the watch foreshadows that the two halves of the device will one day meet again.

• key
• locked box
• manikandan
• athreya
• 2016
• watch

Priya raises this logical point because an adult Manikandan returning to 1990 as himself could simply speak to Sethuraman and warn him directly about Athreya's attack. The fact that he arrives as a nonverbal infant means he cannot communicate the danger verbally, which seems counterproductive. Sethuraman and Priya soon realize the only reasonable explanation is that he is trying to warn them, which prompts them to find the watch and act decisively to eliminate Athreya.

Foreshadowing: Sethuraman's habit of questioning the logic of his own invention hints that he will eventually understand the infant's silent message.

• priya
• manikandan
• infant
• warning
• communicate
• 1990

Manikandan builds a replica to protect himself because the INR 5 crore reward advertisement suggests that whoever posted it has dangerous inside knowledge about the watch's true capabilities. By carrying a fake version, he can test whether the person at the address actually possesses a working time-travel device without risking the original. This precaution ultimately backfires when Athreya immediately recognizes the imitation, exposing that Manikandan has the real watch and triggering the fatal confrontation.

Foreshadowing: Mani's skill as a watch mechanic is established early, foreshadowing that he can craft a convincing copy.

• manikandan
• replica
• watch
• athreya
• advertisement
• reward

Sathyabama takes in Manikandan because Sethuraman, mortally wounded during his escape on the train, desperately pleads with her to protect his infant son. Touched by his sacrifice and willing to honor a dying man's final wish, she agrees to raise the child as her own. Manikandan grows up completely unaware of his true heritage, believing Sathyabama to be his biological mother until the watch's discovery begins unraveling his past in 2016.

Foreshadowing: Sathyabama's quiet compassion during the train encounter hints that she will become the bridge between the two timelines.

• sathyabama
• manikandan
• mother
• train
• heritage
• sacrifice

Sethuraman agrees to discard the watch because Priya, weary of the violence and trauma the device has brought into their lives, implores him to abandon it for the sake of their family. After using it once to eliminate Athreya and escape his henchmen, Sethuraman realizes the watch has only ever brought destruction rather than the scientific breakthrough he originally envisioned. Choosing his family over his invention, he relents and they leave their past behind on a new train journey.

Foreshadowing: Priya's earlier unease about the watch's power foreshadows her decisive demand to let it go.

• sethuraman
• priya
• watch
• destroy
• family
• choice

During the final confrontation on the train, Athreya kills Sethuraman and then jumps off the moving train himself in an attempt to escape. He survives the fall but suffers severe injuries that leave him unconscious, and he ends up in a hospital where he remains in a coma for 26 years. He only awakens when a fire breaks out at the hospital, only to discover he is now paralyzed from the waist down and has lost decades of his life.

Foreshadowing: Athreya's willingness to jump from the train hints at his survival instinct that allows him to endure the long coma.

• athreya
• coma
• train
• paralysis
• hospital
• fire

The post-credits scene shows a young Manikandan meeting a young Sathya, hinting that despite the timeline being altered, their fates remain intertwined. Because Sethuraman and Priya now take a new train alongside Sathyabhama and build a new life, Manikandan grows up in a different but connected environment where he eventually crosses paths with Sathya. It implies that their romance is destined to repeat across timelines, giving the story a hopeful and cyclical ending.

Foreshadowing: Mani and Sathya's adult meeting in 2016 echoes the destined quality that the closing scene makes explicit.

• ending
• young mani
• sathya
• romance
• destiny
• timeline