Nieves is a normal girl from Madrid who is a fan of the Adams Family, to the point that she calls herself Thursday and thinks she is Wednesday's cousin, an institution in the whole world.
In this way she tries to be less sociable, more peculiar and use all possible elements to be like them in such a particular way that will generate terrifyingly funny situations. So much so, that the headmistress of the school decides to call her parents, who are obsessed with imitating the well-known Adams Family, but without much success, achieving NO RESEMBLANCE WHATSOEVER, turning their attempts into a parody full of funny moments, achieving more laughter than fear.
One of the characteristics of Thursday is that one of his best methods of relating to the world is with music, with which he manages to make his magic even more terrifying every time he sings his songs.