Arum, a butler, decides to resign after enduring repeated power harassment and verbal abuse from the Imperial Princess Lisithea. He, who was constantly called incompetent, was actually an incredibly skilled butler who handled all of the Princess's unreasonable demands single-handedly! After leaving the empire, Arum is taken in by Brigitte, a princess of a neighboring country known as the "Sunflower Princess," where he begins to display his off-the-charts abilities. The story of the strongest butler, who becomes peerless to protect the princess and his new home, begins now!