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

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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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400 Days Summary

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Characters, Settings & Themes in 400 Days

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