Synopsis:

Tôma is the victim of a bad joke played by fate: he has an extraordinary gift, that of canceling all supernatural power. But in the Academic City, the swarming city of occult science students where he lives, this incredible ability does not earn him any esteem. Ironically, every time he uses his power, terrible bad luck hangs over him! Perhaps it is this curse that makes him cross paths with Index, a young nun pursued by disturbing magicians. A strange mixture of courage and naivety, Index has memorized 103,000 works of witchcraft banned on behalf of the Church. Weakened without knowing it by the secrets she shelters, the young girl is on the verge of seeing a death trap close on her. Science or magic, who will win?