A teenage girl is raised underground by a kindly robot "Mother" -- designed to repopulate the earth following the extinction of humankind. But their unique bond is threatened when an inexplicable stranger arrives with alarming news.一个十几岁的女孩被一个善良的机器人提出了地下地球“母亲”——旨在重新填充后人类的灭绝。但他们独特的债券受到威胁时,当一个令人费解的陌生人用耸人听闻的新闻了。