
Several years after the original experiment, survivor David Herdeg and his wife Allison, whom he rescued in 1984, are raising their child when David awakens from a painful sleep to a drastically altered reality. In this timeline Germany won World War II, and America is preparing to celebrate fifty years under Nazi rule.
Does Philadelphia Experiment II have end credit scenes?
No!
Philadelphia Experiment II does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Philadelphia Experiment II, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Larry Cedar
Hank the Controller

James Jude Courtney
Vortex Technician

Geoffrey Blake
Logan

Hank Stone
Gate PK

Gerrit Graham
Dr. William Mailer / Friedrich Mahler

Brad Johnson
David Herdeg

Craig Branham
Guard

Cyril O'Reilly
Decker

James Greene
Professor Longstreet

Andrew Steel
Lieutenant

Marjean Holden
Jess

David Wells
Pinstripes

Allen Perada
Mahler's Double

Lisa Robins
Scotch

Al Pugliese
Coach

John Rixey Moore
General

John Christian Graas
Benjamin Herdeg

Ally Porabas
Gate Guard
Discover where to watch Philadelphia Experiment II online, including streaming platforms, rental options, and official sources. Compare reviews, ratings, and in-depth movie information across sites like IMDb, TMDb, Wikipedia or JustWatch.
Challenge your knowledge of Philadelphia Experiment II with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Who is the main protagonist of the film?
David Herdeg
William Mailer
Professor Longstreet
Jess
Show hint
Read the complete plot summary of Philadelphia Experiment II, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
Nine years after the Philadelphia Experiment, David Herdeg has carved out a quiet life in modern California. He is a widower who weathered the loss of Allison and built a family around their son, Benjamin Herdeg. The pair face a steady grind: a faltering business, Ben’s slipping school attendance, and mounting pressure from banks threatening foreclosure. Despite the strain, David refuses a lifeline from Professor Longstreet, the original director of the Philadelphia Experiment, who urges him to rejoin the Navy. What weighs heaviest on David, though, are the painful episodes that Longstreet brushes off as stress, a diagnosis that does not begin to explain the trouble surging through his body.
Meanwhile, in a parallel strand of the same science, Dr. William Mailer, portrayed by Gerrit Graham, using the Experiment’s technology in secret, engineers a bold plan of his own. His aim is to teleport a bomber into enemy airspace for a sudden strike and then recall it before reaction sets in. He demonstrates a proof of concept by beaming a model aircraft across a room, and his work captures attention in a world hungry for tactical breakthroughs. Longstreet, already wary of the risks, convinces a cautious panel to withhold further backing. He also supplied Mailer with the equipment, but his condition remains strict: the device is strictly for testing. Mailer’s experiments, however, begin to ripple back into David’s life, triggering the very episodes Longstreet dismissed as stress.
As pressure mounts, David tries to pull away from California’s grip, hoping to remove himself from a project that has long since left him unsettled. In a desperate bid to prove his capabilities, Mailer uses the technology to teleport an F-117 Nighthawk, a plane that should reach its destination and return—but this time it does not, and the world as David knows it seems to fracture. He collapses in pain, a seizure tearing through him, and the surrounding environment shudders. The sequence of events costs him dearly: his son Ben vanishes, and David finds himself thrust into a changed 1993, fleeing from a heavily armed military unit that hunts him for reasons he cannot fathom. He is rescued by Jess, a bold leader who commands an underground resistance. She reveals a startling truth: in this altered timeline, Nazi Germany has won World War II and is preparing to finalize half a century of rule over the United States.
The key hinge of this new reality is a weapon the world once believed was fallen to history: the Phoenix. In this timeline, the Phoenix enabled a devastating strike—dropping atomic bombs on Washington, D.C., and other East Coast targets—and Germany’s victory followed a rapid surrender by the Allies. The device’s arrival and the destruction of a crucial time-bending mechanism had allowed Friedrich Mahler, who claims credit for the invention, to be ridiculed for his failure to reproduce it. In truth, the Phoenix was the F-117 that Mailer had teleported through time, loaded with a nuclear payload and sent to Ramstein. The time-travel trick that allowed the launch had unintended consequences, and Mahler’s ascent to glory was hollow.
With the resistance under pressure, Longstreet seeks out David as the only one who can set history straight. David’s blood, a product of his prior time journeys, holds a unique property that could power a return to the original timeline. The plan is for David to slip back, correct the sequence, and prevent the Phoenix from ever leaving its hangar. Mailer, who has become a Nazi administrator in this bleak future, discovers the resistance’s aims and intensifies his own pursuit of the time machine. The pursuit culminates in a siege on Mailer’s base as the rebels scramble to reach the device, while David fights through captivity, draws a vial of blood, and escapes to race back through time—with Mailer not far behind.
The climactic trip lands David and Mailer in 1943, on the night before the Phoenix is scheduled to depart. Mailer’s encounter with his own father poses a paradox that tests the limits of time and truth: the elder Mailer declares that he does not have a son. David presses forward, determined to halt the mission and destroy the aircraft at its source. In the ensuing struggle, he succeeds in crippling the Phoenix, but the escape through the portal is not simple. Mailer shoots, wounding David, who nevertheless draws his weapon and turns the tables on Mahler, killing him and triggering a paradox that unravels Mailer’s hold on history. With the paradox resolved, David crawls back into the portal and returns to a corrected 1993, where the world has been restored to its rightful course.
Back in the present timeline, David meets his son Ben again at a Little League game, surprised to find that the past has realigned in his favor. He discovers, with a mix of relief and wonder, that Jess—who once aided the resistance—has become the mother of one of Ben’s teammates, a sign that the fabric of his life has been re-woven by the choices he made and the dangers he faced. The journey reinforces the fragile balance between two worlds and the cost of altering time, but it also offers the chance for healing: a father’s return to his son, a family’s reconciliation, and the quiet knowledge that courage can bend the river of history back toward home.
This retelling preserves the original’s core events and emotional stakes, while presenting them in a readable, coherent flow that honors the cast’s contributions and the story’s intricate timeline.
Uncover the Details: Timeline, Characters, Themes, and Beyond!

Coming soon on iOS and Android
From blockbusters to hidden gems — dive into movie stories anytime, anywhere. Save your favorites, discover plots faster, and never miss a twist again.
Sign up to be the first to know when we launch. Your email stays private — always.
Watch official trailers, exclusive clips, cast interviews, and behind-the-scenes footage from Philadelphia Experiment II. Dive deeper into the making of the film, its standout moments, and key production insights.
Explore all cars featured in Philadelphia Experiment II, including their makes, models, scenes they appear in, and their significance to the plot. A must-read for car enthusiasts and movie buffs alike.
Discover the central themes, ideas, and keywords that define the movie’s story, tone, and message. Analyze the film’s deeper meanings, genre influences, and recurring concepts.
Dive into our Movie Wiki for in-depth film encyclopedia entries, including cast biographies, production trivia, plot synopses, behind-the-scenes facts, and thematic analyses. Whether you’re researching iconic directors, exploring genre histories, or discovering hidden easter eggs, our expertly curated movie database has everything you need to fuel your cinematic passion.
Browse a curated list of movies similar in genre, tone, characters, or story structure. Discover new titles like the one you're watching, perfect for fans of related plots, vibes, or cinematic styles.
What's After the Movie?
Not sure whether to stay after the credits? Find out!
Explore Our Movie Platform
New Movie Releases (2025)
Famous Movie Actors
Top Film Production Studios
Movie Plot Summaries & Endings
Major Movie Awards & Winners
Best Concert Films & Music Documentaries
Movie Collections and Curated Lists
© 2025 What's After the Movie. All rights reserved.