The story takes place in an old residential community. The Zhou family is an ordinary family of five. Beneath their seemingly harmonious surface lie selfish desires, greed and indifference. Trivial daily conflicts and interest-driven calculations keep emerging. Unnoticed, a deadly cycle triggered by human weaknesses slowly tightens starting from trivial matters, eventually dragging everyone into irreversible doom, perfectly illustrating the tragic fate that those who harm others will end up harming themselves.
