400 Days

400 Days

Year: 2016

Runtime: 91 min

Language: English

Director: Matt Osterman

Sci-FiMysteryThriller

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.

400 Days (2016) – Spoiler-Free Movie Summary & Plot Overview

Get a spoiler-free look at 400 Days (2016) with a clear plot overview that covers the setting, main characters, and story premise—without revealing key twists or the ending. Perfect for deciding if this film is your next watch.

In a stark underground facility, four volunteers are sealed away for a 400‑day simulation meant to mimic the mental and physical strain of a deep‑space voyage. The environment is a meticulously crafted spacecraft replica, its walls humming with the soft thrum of life‑support systems while the world above remains out of reach. As days blur into weeks, the isolation becomes a living character itself, pressing against the crew’s resolve and amplifying every doubt.

The team is led by the steady hand of Captain Theo Cooper, whose command style blends professionalism with an unspoken yearning for connection. Beside him, Dr. Emily McTier brings scientific rigor and a calm curiosity that often tempers the group’s rising anxiety. Bug Kieslowski contributes a quiet, introspective presence, his thoughts drifting toward personal memories that surface in the cramped quarters. The youngest, Cole Dvorak, balances optimism with a restless edge, his humor masking a deeper unease. Their interactions swing between camaraderie and tension, each personality highlighting the fragile balance required to survive months of near‑solitude.

Beyond the steel walls, communication with Earth begins to falter, and the crew is left to wrestle with the growing suspicion that the experiment may conceal motives beyond pure research. The film’s tone stays deliberately taut, a blend of clinical sci‑fi ambience and creeping psychological dread. Shadows lengthen as the days pass, and the astronauts find themselves questioning not only the mission’s purpose but also the very nature of the reality they’ve been confined to. This atmosphere of quiet uncertainty sets the stage for a story that probes how far human endurance can stretch when the universe feels both boundless and suffocatingly close.

Last Updated: August 10, 2025 at 04:09

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Discover curated groups of movies connected by mood, themes, and story style. Browse collections built around emotion, atmosphere, and narrative focus to easily find films that match what you feel like watching right now.

Movies about isolated crews like 400 Days

Small groups trapped in confined spaces descend into suspicion and madness.If you liked the intense paranoia and psychological strain in 400 Days, explore these other movies about small groups struggling to survive and maintain sanity in extreme isolation. This thread features similar stories of confinement and deteriorating mental states.

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Narrative Summary

These narratives often begin with a team in a controlled environment—a spaceship, an arctic base, a bunker. As isolation deepens and communication with the outside world fails, small incidents escalate, trust evaporates, and characters begin to question each other's motives and their own perception of reality.

Why These Movies?

These films are grouped by their focus on internal psychological conflict over external action. They share a tense, claustrophobic mood, a steady pacing that builds dread, and a central theme of reality versus illusion within a confined group dynamic.

Movies with ambiguous reality like 400 Days

Stories where characters can't trust if their world is real or an elaborate construct.Fans of the uncertain reality and mind-bending premise in 400 Days will enjoy these other films exploring simulation theory and ambiguous truths. Find more movies like 400 Days where nothing is quite as it seems.

mind-bendinguncertainsuspensefulmysteriousthought-provokinganxiousambiguousunreliable

Narrative Summary

The core journey in these movies is the protagonist's struggle to discern truth from deception. Clues are ambiguous, authority figures are untrustworthy, and the environment itself might be a fabrication. The plot often builds towards a revelation—or further ambiguity—about the true state of the world.

Why These Movies?

They are connected by a shared narrative device: the central ambiguity of the setting. This creates a specific kind of intellectual tension and suspense, focusing on mystery and existential doubt rather than straightforward conflict. The endings are often intentionally ambiguous.

Unlock the Full Story of 400 Days

Don't stop at just watching — explore 400 Days in full detail. From the complete plot summary and scene-by-scene timeline to character breakdowns, thematic analysis, and a deep dive into the ending — every page helps you truly understand what 400 Days is all about. Plus, discover what's next after the movie.

400 Days Summary

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400 Days Summary

400 Days Timeline

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400 Days Timeline

Characters, Settings & Themes in 400 Days

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Characters, Settings & Themes in 400 Days

400 Days Ending Explained

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400 Days Ending Explained

More About 400 Days

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