当妻子和儿子成为一宗入室暴力罪案的受害者后，丈夫带着妻儿搬到了一个科技先进，守卫森严的社区。他们能来逃避外面世界的种种危险吗？
A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground.
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