“Get out. A nondescript, unsophisticated maid like you has no place in this house.” The master’s precious vase was broken. Nina, a small, simple maid, is fired for this crime. Nina is not well understood by those around her, but she does all the simple chores around the house. Cleaning up the mess. Buying spices and ingredients according to the tastes of the family and the guests of the master of the house. She cleans up the unfinished chores of the other maid. Helping a bad-tempered young lady study. Turning over counterfeit art. Taking care of seasonal clothing, etc. etc. etc… At first glance, the house hasn’t changed since Nina left. But then, little by little, it starts to fall apart… But that’s not Nina’s problem anymore. Nina, who has worked as a maid all her life, suddenly decides to go on a trip. And there she meets some “unfortunate” girls. Emily, a magician with extraordinary magical powers, but she doesn’t know how to use them. Astrid, an inventor who is very smart, but her experiments are not successful for some reason. Tien, a member of the wolf tribe who is always hungry and has no power. Thanks to Nina, the all-powerful maid, the girls can now use their true powers. The combined strength of the girls is equivalent to an entire army…. But Nina does not know that.