This drama tells the story of the director of the Ayuta Law Firm, Ayuta Kotaro (played by Mahiro Takasugi), who inherited his father's firm. After his father's era of having many lawyers, now there is only one lawyer under his name, Kotaro. One day, a suspicious woman, Tendo Ryumi (played by Kamishiraishi Mone), who he met in court, suddenly handed him an envelope. In the envelope with "Sealer" written on it, there was a prediction of the verdict, and it was completely fulfilled. Although she has no experience as a lawyer, Kotaro and the paralegal Kanriie admire her foresight and decide to try to hire Ryumi as a lawyer. Ryumi, who originally played shogi, guided the incident to be solved according to the rules of shogi! ?