akuragawa Fuka (Haru) is a tough-minded lawyer of one of Japan’s largest law firms. An expert in divorce cases, she has never lost a case and is secretly called “iron mask”. Fuka is asked by her boss Isohata Koichiro (Otani Ryohei) to take on a divorce case. The opposing lawyer for the case is the strange lawyer Kojitani Yota (Okada Masaki). With his talent for reaching an amicable settlement no matter how complicated a case may be, Yota is a complete contrast to Fuka. Although they are on opposing sides in court, he has fallen in love with her at first sight and is over-friendly while she treats him coldly. Who will be the lawyer who will win the divorce case?