Housewife Ririka Kinoshita became liable as the perpetrator in her husband's traffic accident, now overwhelmed by hospital bills, medical expenses, and compensation payments. To cope, she took a part-time job at a night security company, lured by the promises of "no experience necessary," "high hourly pay," and "only 2 or 3 days per week required." Though inexperienced, she diligently carried out her duties—until one day, during a break, she discussed unsettling news with a coworker about a recent robbery in the area. That night, due to an unexpected schedule change, Ririka found herself working alone. But at the security site, she was suddenly confronted by a tragedy beyond anything she could have imagined…