Kento Sakisaka (Yutaka Takenouchi) is a partner at a law firm specialising in corporate law. He is strong with negotiations and as a mediator. He hates to lose and thinks his mission is to protect his business clients. One year ago, Kento Sakisaka divorced Yoshie Natsume (Yasuko Matsuyuki) who works as a lawyer at the same law firm. He now lives with his young daughter.

Two lawyers who used to be married, appear to going against each other in a case?!