After meeting her husband at work and marrying following a workplace romance, Rie happily left her job to become a full-time housewife. One day, she receives a sudden email from Hirai, her former superior. He explains that he was forced to resign due to financial troubles at the company, has since separated from his wife, and is now drowning in debt—so much that he's reaching out to former subordinates for help. Feeling deeply sympathetic toward his situation, Rie decides to secretly lend him money without telling her husband. This single decision sets off an intense and emotional drama.