某个平静天，在家工作的董遭遇了一个巨大变故。面对变故，董表现出超乎寻常的冷静。但她内心却开始隐隐约约地感受到异常和危险，过往一切看似稳定和平静的关系都变得摇摇欲坠。对于不可知的恐惧在她心里开始蔓延，关系和事件的走向都越发的奇怪和不可预测。面对这一切，多年无法动笔的董开始新的写作生活，也开始重新审视她身边的一切。

On a normal day, a stranger breaks into Sumire's apartment and assaults her. Sumire reacts incredibly calmly to the incident, but she still feels the dangers and uncertainties creeping upon her. All that seem to be peaceful and ordinary start to collapse. As everything slips toward the unexpected, Sumire starts writing again, and reinvestigating the relationships around her.