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Watch Shelter online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.

An ominous disaster forces five survivors to wait out nuclear winter in a secret underground bomb shelter. With limited supplies and nowhere else to go, they struggle against the clock, uncertain if they'll survive until it's safe to return to the surface. As weeks turn into months, one room proves too small for five people. Habits curdle into routine, relationships dissolve, obsessions give way to madness.