Akuma Kun and Mephisto III get invited to the home of a very wealthy client, who has a disturbing request — to summon Satan for his flesh.

After arriving in Easter Island to investigate a strange red nail, Akuma Kun and Mephisto III discover the body of a murdered young woman.

On a dark and stormy night, a ghastly looking man comes looking for Sanae. He turns out to be her husband, who's been missing for five years.