The year is 1959. The place, Curitiba, Brazil. Private detective John Clayton is hired by the mysterious and seductive Helen Zola to investigate her husband, a scientist with a secret and abominable past. Against the wishes of his faithful friend Vonetta, Clayton accepts the case and gradually finds himself in the middle of a dark plot involving a library created by the legendary Dr. Lucchetti, which harbors the secrets of monsters, vampires and other macabre creatures.