: Because the protagonist is from another world, he is the only one capable of becoming their master. He is tasked by the chairman of a maid school to train and serve as the master for these ten maids.

The plot follows a protagonist who is transported from the modern world to a magical fantasy realm known as , the "country of maids". Upon arrival, he discovers he possesses a unique "dirty service skill" that makes him immune to certain curses prevalent in this world.

: He encounters a group of "cursed maids" who are unable to serve a master due to a supernatural affliction.