Philadelphia Experiment II (1993) Timeline Explained – Every Event in Order

David's episodes were triggered because his body was physically altered by his previous time travel in the original Philadelphia Experiment. When Mailer conducted his time-teleportation tests with the same technology, it created a resonance that affected David, causing painful seizures as the timeline began to destabilize around him.

Foreshadowing: Earlier in the film, Longstreet dismisses David's episodes as stress, but the timeline shows they coincide exactly with Mailer's testing.

• david herdeg
• mailer
• time travel
• seizures
• resonance
• experiments

The Phoenix was a futuristic aircraft that dropped atomic bombs on Washington, D.C., and other East Coast cities, causing the Allies to surrender and allowing Nazi Germany to win World War II. Germany then ruled America for fifty years in this altered timeline.

Foreshadowing: Jess reveals the existence of the Phoenix early in the altered timeline, explaining that it was the weapon that changed everything.

• phoenix
• nuclear bomb
• washington
• nazi germany
• wwii
• victory
• weapon

The F-117 Nighthawk was the aircraft Mailer teleported through time in his experiment. It did not return as expected, and was sent back to 1943 with a nuclear payload. Friedrich Mahler claimed credit for inventing it, naming it the Phoenix, though he was later ridiculed for failing to reproduce the technology.

Foreshadowing: Mailer's decision to teleport the F-117 despite knowing it might not return directly leads to this transformation.

• f-117
• phoenix
• mailer
• mahler
• time travel
• 1943
• aircraft

When Mailer traveled back to 1943 and confronted his father, the elder Mailer told him he has no son. This was because the timeline was already shifting due to the paradoxes being created, Mailer's presence in 1943 and the events surrounding the Phoenix meant his own existence had become unstable, causing him to be erased from his father's memory and history.

Foreshadowing: This ominous encounter foreshadows the paradox that ultimately erases Mailer from history.

• mailer
• father
• 1943
• paradox
• no son
• timeline

David used his blood, which had been altered by previous time travel and could power the time machine, to travel back to 1943 and prevent the Phoenix from ever being deployed. After destroying the aircraft and killing Mahler, he returned through the portal to a corrected 1993 where the timeline had been restored.

Foreshadowing: Longstreet explains that David's unique blood composition is the key to making the return journey possible.

• david
• blood
• time machine
• return
• timeline
• 1943
• portal

David's blood contained unique properties resulting from his earlier time travel in the Philadelphia Experiment. This made him the only person capable of powering the time machine and surviving the physical toll of traveling through time again. Mailer recognized this value and tried to obtain a vial of David's blood during the siege.

Foreshadowing: Longstreet identifies David's blood as the crucial element that makes the mission feasible.

• david
• blood
• time travel
• power
• machine
• altered dna

When Mailer's experiment fractured reality by teleporting the F-117, the timeline shifted dramatically. Ben ceased to exist in the new 1993 because he was a child born in the original timeline that no longer existed. Only David, whose body had been permanently altered by time travel, remained as a bridge between the two timelines.

Foreshadowing: David's seizure coincides with Ben's sudden disappearance, showing the two events are directly linked.

• ben
• disappeared
• timeline
• vanished
• son
• alternate reality

When David killed Mahler during the struggle in 1943, it triggered a paradox, the Phoenix could never be deployed as the original chain of events was broken. This paradox erased Mailer's hold on history and unraveled the altered timeline entirely, allowing David to return to a corrected 1993 where the original history remained intact.

Foreshadowing: The film establishes that Mahler's death would create a critical break in the timeline chain.

• mahler
• paradox
• killed
• timeline
• restored
• mailer
• paradox resolution

In the alternate 1993, Allison never existed because the timeline changed drastically after the Phoenix was used. The film implies she either never married David or never had Ben in this altered reality. When David returns to the corrected timeline, he finds Allison alive and well, as the original timeline was restored.

Foreshadowing: David mentions Allison has died in the original 1984, but in the alternate timeline, she never existed at all.

• allison
• alternate timeline
• died
• not exist
• restored

When David returns to the corrected 1993, he discovers that Jess, who led the resistance in the alternate timeline, now lives in the original timeline as the mother of one of Ben's teammates. This indicates that the timeline was restored but certain elements were rewoven differently, suggesting the choices David made had lasting effects on reality even after the correction.

Foreshadowing: The ending suggests that some connections from the altered timeline persisted in the restored version.

• jess
• little league
• restored timeline
• ben
• teammate
• mother
• ending

In the altered timeline where Nazi Germany won WWII, Mailer's role in developing the time travel technology that enabled the Phoenix made him valuable to the regime. He rose to power as an administrator, helping maintain the Nazi control over America, a stark contrast to his original intentions of helping the military.

Foreshadowing: Mailer's ambition and willingness to push the technology despite warnings sets him on this dark path.

• mailer
• nazi
• administrator
• alternate timeline
• power
• regime