Mai Kawai is a new police officer who only decided to take the job due to a desire to have a stable income. Having become dissatisfied with her career path, she decides to resign from the police force. On the day she planned to tender her resignation, she meets Seiko Fuji, who had been reassigned to serve as the director of her station. Fuji's dedication to the police force becomes an inspiration to Kawai, who decides to delay her resignation. The series follows the two and other members of the police forms solving crimes in their local area.