The samurai's diet focuses on the protagonist's cooking. By describing the ties between husband and wife and the way to maintain their feelings, they carefully depict and convey "understanding each other's hospitality." Bao Zao (Toshiyuki Nishida), the second generation descendant of Zhou Mu's family, and An Xin (Kengo Kora), the third generation descendant, are real historical figures, and all the new recipes that emerged at that time were copied from Cooking without Words. The hero Chun divorced after being married for two years at the age of 19, and was regarded as a "divorced" person by women in Jiahefan, who remarried to his family because he gave guidance to the peace of mind who was not good at cooking.

During the Edo period, there was a female middle school student, Koharu (Aya Ueto), who had a keen sense of taste and superb cooking, beside Mrs. Jane (Yui Natsukawa), who was loved by Maeda Yoshida, the sixth vassal of Kaga. Koharu's parents run a famous restaurant in Asakusa, but a fire killed them. Inheriting the skills of her parents, Koharu's excellent cooking makes Mrs. Jane doubly happy. At a banquet, Koharu's rich cooking knowledge and insights surprised everyone and impressed Zhou Mu Kawauchi (Toshiyuki Nishida), the chef of San Francisco at that time. A few days later, Kawauchi visited Koharu again. After learning more about the girl's talent, he proposed to Koharu. Koharu once had a marriage, but because of her competitive personality, she was rejected by her husband's family who was a businessman. After following Mrs. Jane, she made up her mind not to marry again. But at Kawauchi's sincere request, she decided to take another step towards the unknown life. Zhou was a great cook (Bao) who served the master for generations, but his eldest son died young and his second son Anxin (Bao) was not good at cooking, which was contrary to his father's earnest expectations. Beautiful Koharu and her exquisite cooking have won the favor of her mother-in-law (Kimiko Yo) and Zhou Mu's relatives, but her peace of mind, who is four years younger than Koharu, is not convinced. After a fierce cooking duel, the newlyweds admitted defeat with peace of mind. With the help of her mother-in-law, Koharu launched a hard cooking training for her husband. On the occasion of the promotion examination, Koharu's unique cooking concept was highly praised by thrifty nobles. Koharu, Anxin's good friend Imai Satoshi (Tasuku Emoto) and his wife Sadai (Riko Narumi) are all happy about his smooth promotion. A year later, Kawauchi decided to retire and take over his father's position with peace of mind, striving for the inheritance of Kaga cuisine. At the same time, the dispute between reformists and conservatives in the Francisco gradually surfaced. With the support of the vassal, otaku Kawazo (Naoko Ogata) vigorously promoted the reform. Under this trend, Giordano Nuxin and other young fighters full of blood and ideals gathered under the banner of otaku. However, with Gide's sudden death, the situation in Francisco took a turn for the worse. A conservative minister, Maeda Tosa (played by Takeshi Kaga), delivered slanderous remarks to the new minister, impeaching him, and the reform trend was swept away. From the powerful Otaru to Tibet, and then to the ordinary soldier Giordano Noshin, all of them have suffered unprecedented impacts. However, the famous unrest in Kaga has just begun. The Lord Zongchen died strangely, and Chong Xi, the heir of the Lord, was poisoned. All the conspiracies point to Shinnyoin, Mrs. Jane, who has lost her life. Deep in the center of the great whirlpool of power and greed, Zhou Mu and his wife could not understand and could not avoid being involved in a series of events.