张盼怀揣着对城市生活的憧憬,从一个三线城市只身来到北京闯荡,找不到好的工作,就从最底层的保姆干起,然而在房东一次次催缴房租的电话中,张娜感到了前所未有的绝望。望着自己这个不足二十平米的地下室,她留下了眼泪,决定踏上另一条路。家里的弟弟来投奔她,透过那道门缝,他看到了姐姐在北京生存的技能……。After her young son accidentally drowns, a woman has a breakdown and is finally placed in a mental hospital. After her release, her husband takes her for a weekend at a secluded country mansion, hoping to help her recover. However, things at the mansion aren't quite what they seem to be, the couple begin to feel an uneasy and oppressive presence, and the mother starts to see th...。