Affected by the recession, Aoi's husband's salary has been reduced, and they are struggling to make ends meet. Then, she sees a part-time job advertised at a nearby convenience store with favorable conditions, and decides to go for an interview. The store manager is a middle-aged man named Ozawa, and although she seems a bit suspicious, she immediately decides to try out working the cash register... After returning home, she gets a call from Ozawa, who says that "30,000 yen has disappeared from the cash register." And then, Aoi...