A mysterious egg has just hatched at a storage of Toto Biological Institute in Tokyo. A female researcher who happens to be at the institute at that time gets infected by the organism of the egg and goes missing afrerward. Several days later, she shows up at St. Mariane Female School near the institute and and kidnaps a student. In a storage room at school, the researcher loses her mind, making the student another victim of parasite of the mysterious organism. This parasite’s cruel killing will continue until it finds a human being who can play a traditional Scotland music, ”Music Against Evil.”