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A team of four astronauts undertakes a rigorous, year-long simulation preparing them for a journey to a distant planet. As the isolation deepens and contact with Earth diminishes, the psychological pressure mounts, threatening their mental stability. When communication abruptly ceases, the crew begins to doubt the mission’s true purpose, suspecting a hidden agenda and questioning the nature of their reality.

A team of four astronauts undertakes a rigorous, year-long simulation preparing them for a journey to a distant planet. As the isolation deepens and contact with Earth diminishes, the psychological pressure mounts, threatening their mental stability. When communication abruptly ceases, the crew begins to doubt the mission’s true purpose, suspecting a hidden agenda and questioning the nature of their reality.

Does 400 Days have end credit scenes?

No!

400 Days does not have end credit scenes. You can leave when the credits roll.

Meet the Full Cast and Actors of 400 Days

Explore the complete cast of 400 Days, 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.


No actors found

Ratings and Reviews for 400 Days

See how 400 Days is rated across major platforms like IMDb, Metacritic, and TMDb. Compare audience scores and critic reviews to understand where 400 Days stands among top-rated movies in its genre.


Rotten Tomatoes
review

22%

TOMATOMETER

review

29%

User Score

IMDb

4.4 /10

IMDb Rating

TMDB

43

%

User Score

Letterboxd

3.7

From 3 fan ratings

Movie Insider

2.45/5

From 42 fan ratings

Take the Ultimate 400 Days Movie Quiz

Challenge your knowledge of 400 Days 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.


400 Days Quiz: Test your knowledge on the psychological thriller '400 Days' and its dramatic exploration of space simulation.

Who is the captain of the crew in '400 Days'?

Full Plot Summary and Ending Explained for 400 Days

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Read the complete plot summary of 400 Days, 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.


Four astronauts—Captain Theo Cooper, Dr. Emily McTier, Bug Kieslowski, and Cole Dvorak—embark on an ambitious journey to undergo a 400-day-long simulation on Earth designed to analyze the long-term effects of space travel. As they spend their time in isolation underground, the crew faces increasingly severe psychological challenges, including paranoia and hallucinations. As tension grows, each member begins to retreat into their own space, both physically and mentally.

One fateful day, a disheveled man unexpectedly appears in their simulated spacecraft, breaking through the boundaries of their isolation. After his sudden departure, the astronauts make the bold decision to exit their underground haven and explore the outside world, only to discover a landscape that has drastically changed. They find the Earth to be enveloped in darkness, with howling winds and an eerie sense of desolation as dust clouds shroud everything in an oppressive gloom.

Venturing forth, they stumble upon a town called “Tranquillity,” which surprisingly boasts inhabitants and electricity. A local man named Zell invites the weary travelers into his diner, where he explains that the moon was hit by a colossal object that unleashed a massive dust cloud, now blocking out sunlight and drastically altering their environment. Despite this alarming revelation, Dvorak remains skeptical, convinced that they are still caught in the simulation, and chooses to venture off to a nearby bar, a decision soon followed by his comrades.

After indulging in a few drinks, Dvorak leaves with a young woman, opting to disregard the safety of his crew. The remaining trio returns to the diner, where Zell extends an invitation for them to rest the night. Bug, taking the first watch, soon finds himself lost in hallucinations, believing he is following his son, Sam, yet unwittingly challenges Zell in the process. When McTier and Cooper awake, they are alarmed to discover that their friends have vanished. When they question Zell about the missing crew members, he curiously claims that they arrived alone, raising suspicion and alarm in McTier and Cooper.

Fearful for their well-being, the duo sets out to find their comrades but is unable to locate them. After a frantic search, they return to their ship, only to realize that they are being trailed by Zell and two other sinister men. A tense confrontation ensues, culminating in Cooper and McTier successfully neutralizing the threats. In a twist of fate, the moment Zell takes his last breath coincides with the conclusion of the 400-day simulation, which the astronauts receive notification has ended successfully.

As the entrance hatch opens, they are greeted by a blinding light, prompting Cooper and McTier to grasp each other’s hands tightly, their hearts racing with anticipation of what lies ahead. The film closes on this moment of uncertainty, leaving audiences on the edge of their seats, wondering about the fate that awaits them beyond the simulation’s end.

Uncover the Details: Timeline, Characters, Themes, and Beyond!

Watch Trailers, Clips & Behind-the-Scenes for 400 Days

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Watch official trailers, exclusive clips, cast interviews, and behind-the-scenes footage from 400 Days. Dive deeper into the making of the film, its standout moments, and key production insights.


400 Days Official Trailer #1 (2015) - Dane Cook, Brandon Routh Sci-Fi Movie HD

400 Days - OFFICIAL EPK Dane Cook, Brandon Routh, Caity Lotz, Tom Cavanagh, Ben Feldman

Cars Featured in 400 Days

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Explore all cars featured in 400 Days, including their makes, models, scenes they appear in, and their significance to the plot. A must-read for car enthusiasts and movie buffs alike.


BMW

2010

X5 E70

Plymouth

1961

Custom Suburban

400 Days Themes and Keywords

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.


space sci fiambiguouslow budget sci fi movieastronautsimulationtrapped in spacepost apocalypseairlockbunkerinsanityinfightingcabin feverconfined spaceexperiment

400 Days Other Names and Titles

Explore the various alternative titles, translations, and other names used for 400 Days across different regions and languages. Understand how the film is marketed and recognized worldwide.


Zero Days - World War 3.0 Zero Days: Nuclear Cyber Sabotage 零日 אפס ימים Hackernes Hemmelige Våben Nulté dny 제로 데이즈 Jours zéro Zero zile Нульові дні 零日網路戰 Уязвимость нулевых дней Nulladik napok Lỗ Hổng Nulté dni Nulti dani

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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.


Other Names for 400 Days

Explore the alternate titles, translations, and working names for 400 Days. Learn how the film is known in different regions, languages, and releases, and discover the variations that reflect its cultural reach and marketing choices.


Zero Days - World War 3.0 Zero Days: Nuclear Cyber Sabotage 零日 אפס ימים Hackernes Hemmelige Våben Nulté dny 제로 데이즈 Jours zéro Zero zile Нульові дні 零日網路戰 Уязвимость нулевых дней Nulladik napok Lỗ Hổng Nulté dni Nulti dani

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