Atsushi is a young man who works at a local convenience store. After graduating from university, he continues to work night shifts, spending empty nights day and night... Something strange happens to his daily life when he meets a woman named Sei, who always stands in front of the store buying canned chuhai. She too cannot bear living alone in her home without her husband, and spends her nights aimlessly at the convenience store. The two end up having a relationship in this place that welcomes anyone who comes, 24 hours a day, day or night.