Fumiwara Naeka is a granddaughter of a billionaire and the heir to his fortune. She is pursued by those who desire her inheritance. In order to protect her from them, an agent is dispatched in the form of a male maid, who looks like a masculine samurai wearing a mask and has teeth like a shark's. Wearing a maid uniform, Kogarashi gives his best effort to serve Naeka. His noisy and pushy services make her daily life exciting.