Otoo returns to Wagnaria once again this time bringing with him a new waitress, Yamada Aoi. Aoi tells a "tragic tale of woe" to which Takanashi responds that she is a liar. Reluctantly he ends up training Aoi in how to be a waitress. As the day progress she tries to assign the various staff members into a fake family structure.

As Sōta feels conflicted over his feelings towards Mahiru, Aoi, wanting Hiroomi to give her some attention, tries to obtain information on the blossoming relationships. Later, Popura gets a toothache and takes the day off, having a dream where she becomes a magical girl. Meanwhile, Kirio ends up discovering Aoi, who is revealed to be the sister he was searching for, and is met with resistance when he tries to take her back home.