When a solar eclipse plunges Rome into darkness, a serial killer starts spreading terror in the streets of the capital city. Luxury escort girl Diana barely escapes with her life, but she becomes blind. With the help of a young Chinese man who was also traumatized by his encounter with the killer, she will try to unmask the culprit… Ten years after his last film (Dracula 3D), the maestro Dario Argento makes his come-back to the giallo genre and reconnects with the chilling terror of his early years.