Influenced by her father, Kawai wanted to become a civil servant to pursue a stable life, but in the end, she only passed the police academy. She felt desperate about the extremely unstable job of being a police officer, which is obviously a local civil servant. She was considering whether to resign during her training. However, a new instructor police officer came to the police station that day. He had become a criminal policeman, but he had problems in the criminal department and was transferred back to the police station. A duo of desperate Okajima prefectural police (mainly men) was born.