The day began rather badly for Melusine. First of all, there is this dwarf riding a dragon that arises from the ground of the castle and accuses Mélisande, the fairy cousin of Mélusine, of stealing the gold of the dwarfs! And who, in order to repay himself, leaves with some of the most beautiful candlesticks of the castle... Then there is the arrival at the school of witchcraft of a new student from Africa, specialist in spells from various grigris, amulet and fetishes, and that his condisciples accuse of being only an impostor incapable of making real magic. Finally, there is the totally unexpected visit of Kaspar, the father of Mélusine, who announces to him his next divorce... and the disappearance of his mother! Melusine will investigate and leave on the traces of his mother... and discover the terrible secret of his parents that might well lead to a war between witches and fairies!