Stranded outside her silo with a failing suit, Juliette Nichols races against time, stunned to find another silo nearby that could be her only hope for survival. Meanwhile, unrest brews inside her original silo as Bernard Holland rallies citizens to maintain order amid rising questions about their world. As Juliette faces unexpected dangers near the new silo, hidden truths about the silos’ origins and the world beyond begin to surface, deepening the mystery.

In a bleak dystopian future, humanity clings to survival deep underground within the confines of a colossal silo. Juliette, an engineer tasked with unraveling the mystery behind the death of a colleague, uncovers startling secrets that threaten the very fabric of their enclosed world.

2020年，地球磁极消失，人类因宇宙辐射大量死亡，百年间生物开始变异并且互相吞噬，而人类只剩人造基地中几万人口苦苦挣扎。
异种深渊里生长着一只拥有自我意识的小蘑菇，它因人类安泽死后的血肉滋养，变成了人类并取名安折。安折决心去人类基地寻找自己被人类采走的孢子。
陆沨是人类基地的审判者上校，他肩负着异种查杀责任，一旦发现异种会立即枪决。而安折的变异却瞒过了陆沨的眼睛，人类和异种的故事就此展开……
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不要温和地走入那个良夜，不要温顺地接受灭亡……