Francesca is a combat maid and she has one simple job - ensure that the carefree and idyllic life of the young lady of the Albergoni family is not disturbed. Many would seek to harm the young lady, so Francesca must ensure that all of the dirt of the world is discreetly cleaned without her noticing.

On a day like any other, the young lady sets off to play with her friend at the park, and as usual, Francesca expects to have a busy time. The cleaning work of a maid never ends after all.