First half of the Japanese anime series. For years, a secret organization called 'Solomon' has been hunting down creatures with paranormal powers known as Witches. This organisation, based in Italy and run by priests, has a branch in Japan: the STN-J. Robin, a 15-year-old girl, joins this organisation. Her talents for manipulating fire prove to be very useful, but the STN-J has very precise plans for the captured Witches - and they do not hesitate to conceal information from Solomon.