Asako Nakajima, who works for a major beer company, Hikari Beer, is still a single office worker while her friends are getting married. One day, Asako is transferred to the sales department from the Consumer Complaint Center, where she has worked for 10 years since joining the company. Despite her dissatisfaction, she remained at the company without any plans to leave, but she continued to make mistakes in her unfamiliar work. One day, she meets Kozo Hamasaki, the heir to a sake brewery in the countryside, after being introduced to a marriage agency that her mother had secretly registered with her.