Susan Scott and Simón Andreu star in this horror directed by Luciano Ercoli. The film follows fashion model Valentina (Scott), who agrees to take LSD with her journalist boyfriend Gio Baldi (Andreu) to explore its effects. Shortly after taking the drug, Valentina believes she sees a woman being murdered with a brutal weapon. Convinced that the killing really took place, Valentina discovers that an identical murder was committed only months before. Shunned by the police, she decides to investigate the mystery for herself, but what she unearths soon puts her life in grave danger.