The narrator, Lan, a girl with a high IQ who has a rough life experience, is the first right-hand man of Brynhild, the "Ghost Godmother" who is easy to get out of touch and hides behind the scenes. Together with the gentleman-like royal bodyguard Takashi Shou, who was once a land lieutenant general, they form an invincible three-man army! And the things they encounter are often so extraordinary. . No matter what kind of enemy he is, if he opposes the eldest lady, please be prepared to die.