

Six strangers, one broken bunker, zero trust — and someone's already lying about why they're really there.
It charts the fallout when a nuclear threat forces six people into a malfunctioning underground bunker. Tensions soon rise as they fight to stay alive. With oxygen and the trust in each other quickly running out, they learn that a more sinister plan is afoot
Acting
Katie Cassidy and Devon Sawa weaponize desperation beautifully.
Production
The bunker itself breathes — groaning metal, flickering lights, crushing geography.
Director
Cecil Chambers
Trivia, insights & behind the scenes
Chambers shot in an actual decommissioned Cold War bunker in Bulgaria, where cast members genuinely couldn't find exits during takes.
The oxygen countdown was real-time in editing — what you see is exactly how long characters had left, no cheating.