In order to protect the life and death of the Pengure Kingdom (an exaggeration), Hayato Gokudera was ordered by the Tenth Generation of Pengure to go to Paris, the Yamamoto mansion, to work as a spy to ensure safety.
But the young master of the mountain house, Takeshi Yamamoto, fell in love at first sight with Hayato Gokudera, who was pretending to be a maid...
This is how the love story begins.