Lin Mo held the yellowed missing person notice and stood at the checkout counter of the convenience store. The instinct of the former police detective made him stare at every shadow that pushed the door open late at night - that was where his sister, who had been missing for three months, last appeared. The new night shift part-timer Shen Yan always sorts the shelves at three o'clock in the middle of the night. The old scars on his sleeves vaguely overlap with the mysterious figure on the night his sister disappeared on the surveillance camera.
On a night when the freezer was inexplicably filled with ice, there was half a torn photo on the bottom of the oden bowl handed over by Shen Yan, which fit perfectly with the missing person notice in Lin Mo's hand. The diary of the former clerk is hidden in the mezzanine of the cash register. Every page says "Don't take orders from women wearing blue skirts." However, there is no such customer in the surveillance.
When Shen Yan admitted that he was looking for his sister who was also missing, behind the two missing person notices, dark red blood suddenly oozed from the convenience store's employee regulations. They are each other's doubts and their only comrades. In the shelves late at night, the truth is slowly revealed with the abnormal noise of the refrigerator.
